Showing posts with label nutella. Show all posts
Showing posts with label nutella. Show all posts

Monday, March 29, 2010

Math & Cake: Chocolate Cake with Chocolate-Nutella Filling and Brown Butter Frangelico Frosting


Last week, I gave a talk about Math and Cake.  Ok, I had a fancier title, but my "side hobby" in mathematics is an area called fair division.  At some point in your life, you probably needed to fairly divide a candy bar or some other yummy treat between you and a friend:  one of you cut the treat in two, and the other got to choose first.  Fair!  But what do you do if there are three people? Or more?  My college adviser asked me this question on my very first day of college.  He does research in the area, and got me interested in the subject.  Extremely interesting mathematically, but also when else do I get to show pictures of all sorts of cake during a math lecture?!    See my book if you'd like to learn more about fair division and cake-cutting.

This is the cake I made for my talk.  It was sort of a prop, but I figured it'd give the audience something to look at if they zoned out for the math content!  No pictures of the inside of the cake unfortunately, but it went over very well.  Not a crumb left.







Chocolate Cake  (from Epicurious)
3 ounces fine-quality semisweet chocolate
1 1/2 cups hot brewed coffee (I used hazelnut coffee)
3 cups sugar
2 1/2 cups all-purpose flour
1 1/2 cups unsweetened cocoa powder (not Dutch processed)
2 teaspoons baking soda
3/4 teaspoon baking powder
1 1/4 teaspoons Kosher salt
3 large eggs
3/4 cup vegetable oil
1 1/2 cups well-shaken buttermilk
3/4 teaspoon vanilla extract

Preheat the oven to 300°F and spray 2 10" pans with baking spray (I used 2 9" pans and made an additional 3 inch cake; I've also used just the 2 9" pans before). Line bottoms with rounds of parchment paper and spray paper as well. 

 
Finely chop the chocolate and place in a medium bowl; pour hot coffee over the chocolate. Let stand for one minute, then stir until chocolate is melted and the mixture is smooth.

Whisk together the sugar, flour, cocoa powder, baking soda, baking powder, and salt in a large bowl.

In another large bowl, with an electric mixer, beat eggs until thickened slightly and lemon colored (about 3 minutes with a standing mixer or 5 minutes with a hand-held mixer).  Slowly add oil, buttermilk, vanilla, and melted chocolate mixture to eggs, beating until combined well.  Add sugar mixture and beat on medium speed until just combined well.

Divide batter between pans and bake in the middle of oven until a tester inserted in center comes out clean, 1 hour to 1 hour and 10 minutes.

Cool the cake layers completely in pans on racks. Run a thin knife around edges of pans and invert layers onto racks. Carefully remove parchment paper and cool layers completely.

This is a tall cake!



Chocolate & Nutella Frosting   (adapted from Chocolate Chocolate)

4 tablespoons unsalted butter
2 ounces unsweetened chocolate, melted and cooled to tepid
1/3 cup Nutella, depending on taste (the Nutella taste is somewhat mild)
Large pinch of Kosher salt
2 teaspoons vanilla extract
3 1/2 - 4 cups powdered sugar
1/2 cup milk, heated to tepid

Beat butter on medium speed for 1-2 minutes.

Blend in the melted chocolate, Nutella, salt, vanilla, 1/3 cup milk, and 2 1/2 cups powdered sugar.

Add in the rest of the milk; beat for 1 minute.

Add the rest of the powdered sugar; beat for 1 minute. Use more powdered sugar for a stiffer consistency, less for a softer consistency.

Refrigerate the frosting for 1-2 hours until spreadable.




Brown Butter Frosting (enough to frost/decorate a tall 9" 2-layer cake or a 3-layer 8" cake)


3 sticks butter, browned
1 1/2 pounds powdered sugar
6-8 tablespoons heavy cream
6-8 tablespoons Frangelico
Pinch of Kosher salt (optional)
1 tablespoon vanilla extract

Brown the butter, pour through a fine meshed sieve into a heatproof bowl, and set aside to cool.  Wait for it to cool completely.

Pour the cooled brown butter into mixer bowl (paddle attachment).  Add about 1/3 of the powdered sugar, and beat.  Add the caramel syrup, and continue beating. Add half the remaining powdered sugar, and beat. Add the 4 tablespoons (1/4 cup) of heavy cream, and beat until smooth.  Add more cream if you'd like the frosting to be softer, and more powdered sugar if you'd like it to be stiffer. Add salt if desired.


Refrigerate until ready to use.  Re-whip the frosting right before use. If it's been in the fridge awhile, you might need to let it sit at room temperature for an hour or so until it's soft enough to whip.


Assembly

Lay one of the chocolate cake layers on a cake board or plate.  Spread the chocolate frosting over the surface, leaving a half-inch border all around the outside.  You can also spread just half the frosting on this layer, and spread the rest on top.  You'll still cover the whole thing with the brown butter frosting.
Place the second cake layer on top of the first, and cover the whole cake with a crumb coat (very thin layer of frosting).  Be careful not to let your offset spatula touch the cake, or you'll get tons of chocolate crumbs in your frosting.  Place the cake in the fridge so that the crumb coat sets. You should be able to touch the cake gently without leaving any impression in the frosting.  Frost the cake again; it'll be easier this time with the crumb coat in place.  Use any leftover frosting to pipe shells, and/or tint some of the frosting and make roses. It's a good consistency as is, but if necessary (if it's very hot or humid out), add some more powdered sugar to make the frosting stiff enough for roses.

For instructions on how to do a crumb coat and how to decorate your cake, see King Arthur's online cake decorating tutorials.

For information on how to pipe roses, see Wilton's tutorial.  Or, take a class at your local Michael's.





 


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Friday, February 5, 2010

World Nutella Day: A Hazelnut Cake with Chocolate-Dipped Florentines and Nutella Mousse


Happy Nutella Day!




I love Nutella.  A friend once told me that my slogan should be "Life is Better With Nutella."  I use it to fill macarons, to decorate cupcakes, to flavor pastry cream, to enliven ganache or frosting... there are so many possibilties.  But this Nutella mousse is one of my favorite (and easiest!) Nutella recipes.  Here it is as the filling for my favorite yellow cake.

The cake, however, is not so easy.  The frosting alone took me over two hours, though that includes the time it took to skin the hazelnuts and make homemade praline.  If you're in the mood to spend a few cozy evenings in the kitchen with your mixer and your oven though, it's totally worth it.  If not, just make the mousse, and your guests will still be smitten.

For more Nutella recipes, see the World Nutella Day Website; World Nutella Day is sponsored by Ms. Adventures in Italy and Bleeding Espresso.



 


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Sunday, January 17, 2010

The Best Yellow Cake Ever! And the Best Mousse.



Does yellow cake seem a little boring to you?  I actually loved yellow cake with chocolate frosting and rainbow sprinkles when I was younger (hell, who am I kidding, it still sounds pretty great!), but I don't make a lot of yellow cakes these days.  Until now perhaps.  This cake is anything but boring.  My cakes domed, and I leveled the tops, and those bites of cake scraps were one of my most memorable cake-eating experiences.  So simple, so plain even, and yet so perfect... you really can stop looking for a perfect yellow cake recipe now.  I think I have.  It uses both butter and oil so you get the moistness that the oil gives (oil coats flour proteins better than butter, resulting in less gluten formation) and the flavor that makes butter so popular.  The cake flour adds tenderness, and helps keep the layers level (mine still domed, but I baked it in the bakeshop oven, not my own).  And there's whipped cream!  To add more moisture, flavor, and great texture.  Can't wait to go try whipped cream in my other favorite cakes... but that's for another day.

This Nutella mousse is also unforgettable.  It's tempting not to give out the recipe because then you'll see how easy it is to make, and the end result might not seem so impressive.  But it's too good not to share, so here it is. I use it over and over again; I was actually quite surprised to see it's not on my blog yet in fact.  It more than holds its own as a pie or tart filling; it's delightful between cake layers; it's delicious with nothing but a spoon.

So is this my new favorite cake?  Surprisingly, no.  I love each component separately, but they didn't quite become more than the sum of their parts when joined.  Maybe the yellow cake just doesn't have as much of a shelf life as some cakes, I admit I did not serve it on the day it was made.  I'll give it another try, serving immediately.  Now, don't let me dissuade you from making this cake; it is wonderful.  It's just not quite as amazing as I had expected, given the brilliance of the individual components.

Tomorrow, in baking class, we graduate from cakes.  You'll be seeing meringue, cream puffs, eclairs (oh how good this Nutella mousse would taste inside a fluffy crisp cream puff), pies, and tarts.  Happy baking!





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Saturday, January 2, 2010

Happy New Year!

Hmmm, I'm not really a New Year's Resolutions kind of girl.  Don't think I've ever written down a list of resolutions, and the only one I usually ever make, even in my head, is to drop those last 5 pounds.  But I do feel like I'm in something of a transition period (I got tenure just over a year ago which gives me more freedom academically, I'm on sabbatical next fall which will give me a lot more free time, and I'm in the midst of starting my home-based baking business), so I guess I'm feeling a bit more contemplative than normal.

Here's a recap of some of my food-related highlights of 2009.

Wishing you a wonderful 2010!



January 2009:  Caramel Cake with Brown Butter Frosting Filling and Chocolate Glaze


Dinner Party - January 2009


March 2009:  My Version of Pierre Herme's Concorde with Chocolate Meringue and Nutella Mousse
   










April 2009:  My Birthday, Trip to the Culinary Institute of America (CIA)




 
Dessert at the Apple Pie Bakery Cafe at the CIA


April 2009:  More birthday desserts:  Hazelnut Dacquoise topped with a layer of milk chocolate crunch, topped with chocolate mousse, lemon mousse, more chocolate mousse, then a chocolate ganache glaze







July 2009:  Paris and Italy


Tomato Parmesan Risotto at the Rose Bakery in Paris




Macchiato at Platti in Turin


Spaghetti Pomodoro in Turin - No picture, but one of the best pasta dishes I've ever eaten




August 2009:  Pastry Course at the Institute for Culinary Education (ICE)



Mille Feuille with Chocolate Pastry Cream  (See more pics here, here, and here)



October 2009:  Brioche and Croissant Course at the ICE (still haven't posted about this yet, but I will!)





Brioche a Tete and Braided Brioche Round





Pain au Chocolat


December 2009:  Triple Chocolate Mousse Cake

I've been making versions of this for almost 5 years now, but it will always be one of my favorites.




December 2009:  Buche de Noel (and the Cutest Cookies I've ever made)




 


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Saturday, November 14, 2009

Cupcake Party!





Here's a great idea: have a cupcake party!  Sound silly?  Really, it'll be fun.  It's a lot cheaper than a night on the town, you can nurture your creative side and catch up with friends, and it's hard not to have fun while baking and decorating cupcakes.  I recently did a cupcake workshop with a dozen students at my school, and though they had homework to do and papers to write, everyone just relaxed and had fun for a few hours.  Huge dose of stress relief!

So invite some friends over, and tell them to bring along a hand mixer or two, some muffin tins, some sprinkles, maybe some M&M's, a jar of Nutella perhaps...  Pair up, and make your cupcake batters.  Then just keep filling and baking those cupcakes.  Stick the muffin tins in the freezer or outside in the cold to cool off between rounds.  A dozen of us made well over 200 hundred cupcakes in just a few hours.  Once the batter is done, start making frosting while keeping a watchful eye on the cupcakes. When the frosting is done and the cupcakes are cool, put out all the frostings, sprinkles, and other decorations, and get creative!


At our cupcake event, we made 4 kinds of cake:  peanut butter, chocolate, graham cracker, and brown sugar; 3 frostings:  brown sugar cream cheese, vanilla frosting (in 4 colors), marshmallow.  We also made chocolate ganache for filling the cupcakes and caramel to fill or drizzle over the cupcakes.  But 2-3 varieties of cake and frosting is plenty, especially for a smaller group.  Here are a couple recipes to get you started.



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Tuesday, October 27, 2009

Macarons with the Daring Bakers




The 2009 October Daring Bakers’ challenge was brought to us by Ami S. She chose macarons from Claudia Fleming’s The Last Course: The Desserts of Gramercy Tavern as the challenge recipe.

I love macarons! My first macaron was two years ago in Paris at Pierre Herme. I wasn't reading food blogs daily at the time, and they were new to me. When I got home, I started looking for various recipes. I tried David Lebovitz's chocolate mac recipe, and they tasted great, but no feet. Then I tried another plain recipe, and no feet. Then one day I was at a bakery in DC buying macarons, and a baker came out of the kitchen, so I asked him about feet. He told me to add a little powdered egg white to the whites to help stabilize. He also told me to age the egg whites at least a week, and maybe even two. Finally - feet! Leaving the piped macarons out to dry before baking has helped a lot too. I think these may be my best two batches of macarons yet, I'm so excited. My new trick: use a second baking sheet underneath your sheet of shells, this helps the shells cook thoroughly without burning. The Nutella and Dulce de Leche fillings were amazing. I'll be making these again, exactly as is, again and again!!

Thanks so much Ami for such a great pick this month; check out lots of other great macarons here!





Tartelette's Macaron Recipe (with some very slight modifications)

For the shells:
90 gr egg whites (about 3) 30 gr granulated sugar
200 gr powdered sugar
110 gr almonds (or almond powder) 1 teaspoon espresso powder
1/2 teaspoon powdered egg whites (not in Tartelette's recipe)

Place the powdered sugar, almonds, and espresso powder in a food processor and pulse a few times until the nuts are finely ground. Even if you use almond powder or ground almonds, I strongly recommend running everything through the food processor. Otherwise, there might be chunks of almonds big enough to clog the tip when you pipe the macaron batter later on.

Beat the egg whites to a foam. You can use a stand mixer fitted with the whisk attachment, but I prefer to beat egg whites with a hand mixer so as not to overbeat.

Gradually add the sugar until you obtain a glossy meringue. Don't go all the way to stiff peaks.

Fold the dry ingredients into the egg whites.
Give quick strokes at first to break the mass and slow down. The whole process should not take more than 50 strokes. Test a small amount on a plate: if the tops flattens on its own you are good to go. If there is a small peak, give the batter a couple of more folds. If you fold too much, the macarons may develop wrinkly shells.
Fill a pastry bag fitted with a plain tip (Ateco #807 or #809) with the batter and pipe small rounds (1.5 inches in diameter) onto parchment paper or silicone mats lined baking sheets.

Preheat the oven to 280F.

Let the macarons sit out for 30 minutes to an hour; they may be ready by the time you're done piping all the batter. If you touch them, they should have dried out and firmed up a bit. Bake for 20-25 minutes, depending on their size. In my oven, 23 minutes is perfect for tiny macarons (1/2 inch diameter), 25 for 1" - 1 1/4 " diameter.

Let cool. If you have trouble removing the shells, pour a couple of drops of water under the parchment paper while the sheet is still a bit warm and the macarons will lift up more easily do to the moisture. Don't let them sit there in it too long or they will become soggy. Once baked and if you are not using them right away, store them in an airtight container out of the fridge for a couple of days or in the freezer.

To fill: pipe or spoon some Nutella or Dulce de Leche on the flat part of one cookie, and top with a second cookie.




Nutella Macs



Dulce de Leche Macs




Here's the recipe for the Pierre Herme macaron (with some slight modifications that worked better in my oven). More pictures, and the recipe for the peanut butter filling, are in my previous post.


Chocolate and Peanut Butter Macarons - A Pierre Herme Recipe



1 1/3 cups finely ground almond powder
2 cups + 2 tablespoons powdered sugar
1/4 cup Dutch processed cocoa powder
1/2 cup egg whites (about 4 large, aged and room temperature)
1 1/2 teaspoons powdered egg whites


Run the almond powder, powdered sugar, and cocoa through the food processor to remove all clumps.

Beat egg whites and dried egg whites on low to medium speed until white and foamy. Turn up to high and whip to firm but not stiff peaks. You want them glossy and supple; when you lift the beater, the whites should form a peak that droops a little.

Gently fold in the dry ingredients in three or four additions. It will seem like you have too much dry ingredients, but keep folding. I think I overfolded though, because I got wrinkly tops (never had that happen before). The white will deflate.

Spoon the batter into a pastry bag, and pipe 1" circles, about 1" apart on parchment paper or a baking mat. Rap the baking sheets on the counter (do it hard, to get the air out of the batter). Let the macarons sit and dry out a bit while the oven preheats.

Preheat the oven to 310 F.

Bake the cookies for 15-18 minutes. Remove from oven. Peel the parchment from the baking sheet, and drop a few drops of very hot water between the baking sheet and the parchment paper. Move the pan around to let the water spread out over the whole sheet. The steam will help loosen the cookies. Remove the cookies from the parchment. Let cool.

Pipe a circle of peanut butter cream on one cookie, and top with a second cookie. Enjoy!







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Sunday, September 27, 2009

More Fun with Puff Pastry and the Daring Bakers

Vols-au-Vent


Mille-Feuille



I was so excited to see puff pastry as this month's Daring Baker's challenge! I absolutely loved all the puff pastry goods I made at my pastry class last month, and this was a great opportunity to try even more. Cakes are definitely my comfort zone, and I've always thought of pastry as being so much more time consuming, but it's really not! I did all 6 turns of the dough in one evening in about two hours, including chilling time, while I regularly spend at least 6 hours on a cake. And it tastes SO good! I'll definitely be getting out the rolling pin a lot more often from now on - although my golden retriever Tsuki was definitely looking at me very strangely as I attacked the butter with my rolling pin.

This recipe was from Julia Child, and was a little different than the recipe we used at ICE. We did 6 turns, rather than 4, and each turn resulted in 3 layers rather than the 4 we did at ICE. Both recipes yielded wonderful results!

I used one-third of the dough for the vols-au-vent filled with a chocolate pastry cream, and the other two-thirds for mille-feuille filled with a Nutella pastry cream. Puff pastry is now up there on my list of favorite desserts (and I really am a cake girl!), it was really that delicious!

I'm so happy to finally be one with my rolling pin.


The September 2009 Daring Bakers' challenge was hosted by Steph of A Whisk and a Spoon. She chose the French treat, Vols-au-Vent based on the Puff Pastry recipe by Michel Richard from the cookbook Baking With Julia by Dorie Greenspan.

Recipe for Puff Pastry:

Michel Richard’s Puff Pastry Dough

From: Baking with Julia by Dorie Greenspan
Yield: 2-1/2 pounds dough

There is a wonderful on-line video from the PBS show “Baking with Julia” that accompanies the book. In it, Michel Richard and Julia Child demonstrate making puff pastry dough (although they go on to use it in other applications). They do seem to give slightly different ingredient measurements verbally than the ones in the book…I listed the recipe as it appears printed in the book. http://video.pbs.org/video/1174110297/search/Pastry

Ingredients:
2-1/2 cups (12.2 oz/ 354 g) unbleached all-purpose flour
1-1/4 cups (5.0 oz/ 142 g) cake flour
1 tbsp. salt (you can cut this by half for a less salty dough or for sweet preparations)
1-1/4 cups (10 fl oz/ 300 ml) ice water
1 pound (16 oz/ 454 g) very cold unsalted butter

plus extra flour for dusting work surface

Mixing the Dough:

Check the capacity of your food processor before you start. If it cannot hold the full quantity of ingredients, make the dough into two batches and combine them.

Put the all-purpose flour, cake flour, and salt in the work bowl of a food processor fitted with a metal blade and pulse a couple of times just to mix. Add the water all at once, pulsing until the dough forms a ball on the blade. The dough will be very moist and pliable and will hold together when squeezed between your fingers. (Actually, it will feel like Play-Doh.)

Remove the dough from the machine, form it into a ball, with a small sharp knife, slash the top in a tic-tac-toe pattern. Wrap the dough in a damp towel and refrigerate for about 5 minutes.

Meanwhile, place the butter between 2 sheets of plastic wrap and beat it with a rolling pin until it flattens into a square that's about 1" thick. Take care that the butter remains cool and firm: if it has softened or become oily, chill it before continuing.

Incorporating the Butter:

Unwrap the dough and place it on a work surface dusted with all-purpose flour (A cool piece of marble is the ideal surface for puff pastry) with your rolling pin (preferably a French rolling pin without handles), press on the dough to flatten it and then roll it into a 10" square. Keep the top and bottom of the dough well floured to prevent sticking and lift the dough and move it around frequently. Starting from the center of the square, roll out over each corner to create a thick center pad with "ears," or flaps.

Place the cold butter in the middle of the dough and fold the ears over the butter, stretching them as needed so that they overlap slightly and encase the butter completely. (If you have to stretch the dough, stretch it from all over; don't just pull the ends) you should now have a package that is 8" square.


Dough/Butter Package


To make great puff pastry, it is important to keep the dough cold at all times. There are specified times for chilling the dough, but if your room is warm, or you work slowly, or you find that for no particular reason the butter starts to ooze out of the pastry, cover the dough with plastic wrap and refrigerate it . You can stop at any point in the process and continue at your convenience or when the dough is properly chilled.

Making the Turns:

Gently but firmly press the rolling pin against the top and bottom edges of the square (this will help keep it square). Then, keeping the work surface and the top of the dough well floured to prevent sticking, roll the dough into a rectangle that is three times as long as the square you started with, about 24" (don't worry about the width of the rectangle: if you get the 24", everything else will work itself out.) With this first roll, it is particularly important that the butter be rolled evenly along the length and width of the rectangle; check when you start rolling that the butter is moving along well, and roll a bit harder or more evenly, if necessary, to get a smooth, even dough-butter sandwich (use your arm-strength!).

With a pastry brush, brush off the excess flour from the top of the dough, and fold the rectangle up from the bottom and down from the top in thirds, like a business letter, brushing off the excess flour. You have completed one turn.

Rotate the dough so that the closed fold is to your left, like the spine of a book. Repeat the rolling and folding process, rolling the dough to a length of 24" and then folding it in thirds. This is the second turn.



Chilling the Dough:

If the dough is still cool and no butter is oozing out, you can give the dough another two turns now. If the condition of the dough is iffy, wrap it in plastic wrap and refrigerate it for at least 30 minutes. Each time you refrigerate the dough, mark the number of turns you've completed by indenting the dough with your fingertips. It is best to refrigerate the dough for 30 to 60 minutes between each set of two turns.

The total number of turns needed is six. If you prefer, you can give the dough just four turns now, chill it overnight, and do the last two turns the next day. Puff pastry is extremely flexible in this regard. However, no matter how you arrange your schedule, you should plan to chill the dough for at least an hour before cutting or shaping it.

(Allie: I did all 6 turns in one evening, then put all the dough in the fridge for a few days. I made the vols-au-vent one evening with a third of the dough, then put the rest in the freezer (unrolled) for another week. After defrosting the dough in the fridge for almost one day, I made the mille-feuille.)



Steph’s extra tips:

-Keep things cool by using the refrigerator as your friend! If you see any butter starting to leak through the dough during the turning process, rub a little flour on the exposed dough and chill straight away. Although you should certainly chill the dough for 30 to 60 minutes between each set of two turns, if you feel the dough getting to soft or hard to work with at any point, pop in the fridge for a rest.

-Not to sound contradictory, but if you chill your paton longer than the recommended time between turns, the butter can firm up too much. If this seems to be the case, I advise letting it sit at room temperature for 5-10 minutes to give it a chance to soften before proceeding to roll. You don't want the hard butter to separate into chuncks or break through the dough...you want it to roll evenly, in a continuous layer.

-Roll the puff pastry gently but firmly, and don’t roll your pin over the edges, which will prevent them from rising properly. Don't roll your puff thinner than about about 1/8 to 1/4-inch (3-6 mm) thick, or you will not get the rise you are looking for.

-Try to keep “neat” edges and corners during the rolling and turning process, so the layers are properly aligned. Give the edges of the paton a scooch with your rolling pin or a bench scraper to keep straight edges and 90-degree corners.

-Brush off excess flour with a pastry brush before turning dough and after rolling.

-Make clean cuts. Don’t drag your knife through the puff or twist your cutters too much, which can inhibit rise.

-When egg washing puff pastry, try not to let extra egg wash drip down the cut edges, which can also inhibit rise.

-Extra puff pastry dough freezes beautifully. It’s best to roll it into a sheet about 1/8 to 1/4-inch thick (similar to store-bought puff) and freeze firm on a lined baking sheet. Then you can easily wrap the sheet in plastic, then foil (and if you have a sealable plastic bag big enough, place the wrapped dough inside) and return to the freezer for up to a few months. Defrost in the refrigerator when ready to use.

-You can also freeze well-wrapped, unbaked cut and shaped puff pastry (i.e., unbaked vols-au-vent shells). Bake from frozen, without thawing first.

-Homemade puff pastry is precious stuff, so save any clean scraps. Stack or overlap them, rather than balling them up, to help keep the integrity of the layers. Then give them a singe “turn” and gently re-roll. Scrap puff can be used for applications where a super-high rise is not necessary (such as palmiers, cheese straws, napoleons, or even the bottom bases for your vols-au-vent).

For the Vols-au-vent:

Egg Wash: Whisk one egg in a small bowl.

On a lightly floured surface, roll one-third of the puff pastry dough into a rectangle about 1/8 to 1/4-inch (3-6 mm) thick. Transfer it to a baking sheet and refrigerate for about 10 minutes before proceeding with the cutting.

Use a 1.5" cookie cutter to cut out rounds from the dough. (Save any scrap by stacking—not wadding up—the pieces…they can be re-rolled and used if you need extra dough. If you do need to re-roll scrap to get enough disks, be sure to use any rounds cut from it for the bases, not the ring-shaped sides.)

Using a ¾"-inch cutter, cut centers from half of the rounds to make rings. These rings will become the sides of the vols-au-vent, while the solid disks will be the bottoms. You can either save the center cut-outs to bake off as little “caps” for you vols-au-vent, or put them in the scrap pile.

Dock the solid bottom rounds with a fork (prick them lightly, making sure not to go all the way through the pastry) and lightly brush them with egg wash. Place the rings directly on top of the bottom rounds and very lightly press them to adhere. Brush the top rings lightly with egg wash, trying not to drip any down the sides (which may inhibit rise). If you are using the little “caps,” dock and egg wash them as well.

Refrigerate the assembled vols-au-vent on the lined baking sheet while you pre-heat the oven to 400ºF. (You could also cover and refrigerate them for a few hours at this point.)

Once the oven is heated, remove the sheet from the refrigerator and place a silicon baking mat (preferred because of its weight) or another sheet of parchment over top of the shells. This will help them rise evenly. Bake the shells until they have risen and begin to brown, about 10-15 minutes depending on their size. Reduce the oven temperature to 350ºF (180ºC), and remove the silicon mat or parchment sheet from the top of the vols-au-vent. If the centers have risen up inside the vols-au-vent, you can gently press them down. Continue baking (with no sheet on top) until the layers are golden, about 15-20 minutes more. (If you are baking the center “caps” they will likely be finished well ahead of the shells, so keep an eye on them and remove them from the oven when browned.)

Remove to a rack to cool. Cool to room temperature.

Fill with chocolate pastry cream (recipe below), and serve.



Recipe for Chocolate Pastry Cream can be found here.




Recipe for Nutella Pastry Cream: Follow the recipe above for chocolate pastry cream, but replace the 3 ounced melted chocolate with 1/2 cup Nutella.

For the Mille-Feuilles: (makes 8 servings)

Divide 2/3 of the puff pastry into two equal pieces. Roll each piece into a rectangle, approximately 12" x 18". Lay the dough on a piece of parchment paper on a half sheet pan or cookie sheet and refrigerate for one hour.

Dock the dough (prick all over with a fork), and cover with another piece of parchment. Place another cookie sheet or half sheet pan on top of the parchment paper (the extra weight will keep the dough from puffing too much). Bake for 35-40 minutes at 350, rotating the pans every 10 minutes or so. The pastry should be a rich golden color. Cool completely.

Use a ruler to cut each rectangle into 3 equal strips. Cut each strip into 3 equal strips.

Assembling the mille-feuille:

Each serving uses 3 strips of pastry. Brush 2 of the 3 strips with melted chocolate, and top with Nutella pastry cream. Place the final strip of pastry on top, and dust with powdered sugar. You can refrigerate the pastry for a few hours before serving, but it will taste best if you serve immediately.

*Thanks to Ed for taking a few of the vols-au-vent pics!

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Friday, August 14, 2009

Chocolate Hazelnut Layer Cake


I love making birthday cakes. I love birthdays and I love cake. This year, Susan requested a cake with the flavors of chocolate and hazelnut - which just so happens to be my favorite flavor combination lately.

The base of this cake is a hazelnut dacquoise, topped with a crunchy layer of chocolate, rice krispies, and hazelnuts. This is topped with layers of chocolate cake and chocolate mousse. The whole cake is covered with a thin layer of chocolate mousse and then a layer of Nutella chocolate frosting. Finally, crushed hazelnuts adorn the sides of the cake. It's not a quick cake to make, but it's much easier when you spread the work over a few days.

I'm not sure which she liked better - the cake or the birthday dance that Derrick and I did for her - but I'm betting it was the cake.





Chocolate Cake
(from Epicurious)

3 ounces fine-quality semisweet chocolate

1 1/2 cups hot brewed coffee (I used hazelnut coffee)

3 cups sugar

2 1/2 cups all-purpose flour

1 1/2 cups unsweetened cocoa powder (not Dutch processed)

2 teaspoons baking soda

3/4 teaspoon baking powder

1 1/4 teaspoons Kosher salt

3 large eggs

3/4 cup vegetable oil

1 1/2 cups well-shaken buttermilk

3/4 teaspoon vanilla extract


Preheat the oven to 300°F and spray 2 9" pans with baking spray (I used 2 9" pans and made an additional 3 inch cake; I've also used just the 2 9" pans before; 2 10" pans also work). Line bottoms with rounds of parchment paper and spray paper as well.

Finely chop the chocolate and place in a medium bowl; pour hot coffee over the chocolate. Let stand for one minute, then stir until chocolate is melted and the mixture is smooth.

Sift together the sugar, flour, cocoa powder, baking soda, baking powder, and salt in a large bowl.

In another large bowl, with an electric mixer, beat eggs until thickened slightly and lemon colored (about 3 minutes with a standing mixer or 5 minutes with a hand-held mixer).

Slowly add oil, buttermilk, vanilla, and melted chocolate mixture to eggs, beating until combined well.

Add sugar mixture and beat on medium speed until just combined well.

Divide batter between pans and bake in the middle of oven until a tester inserted in center comes out clean, 1 hour to 1 hour and 10 minutes.

Cool the cake layers completely in pans on racks. Run a thin knife around edges of pans and invert layers onto racks. Carefully remove parchment paper and cool layers completely.

Note:
You only need one cake layer for this recipe, so either half the recipe or freeze the unused layer for up to 2 months.


Hazelnut Dacquoise
(adapted from Pierre Herme)

2/3 cup finely ground hazelnut flour*

1 cup powdered sugar

3 large egg whites, room temperature

2 1/2 tablespoons sugar

1/2 to 1 cup toasted, skinned hazelnuts, coarsely chopped


Preheat the oven to 325°F. Line a 9" springform pan with parchment paper.

*If you are making your own hazelnut flour, toast the hazelnuts in a single layer on a baking sheet in a 350°F oven for 10-15 minutes until golden and aromatic. Remove from oven, wrap in towel, and let steam for 1 minute. Rub the nuts together vigorously (still in the towel) to loosen skins. This is messy! Most of the skins will have fallen off (it's ok to leave some on); pick out the hazelnuts and coarsely grind in food processor. I sometimes buy hazelnut flour, as the difference in taste is minimal. It is still necessary, however, to put it through the food processor with the powdered sugar to make it fine enough, especially if you're using it for something like macarons. Otherwise the small pieces of nuts will get stuck in your piping tip.

Place the hazelnut flour and powdered sugar in the food processor, and pulse a few times to combine.

Separate the eggs (Use a warm water bath to first bring the eggs to room temperature if you forget to take them out of the fridge soon enough). You can store the yolks in the fridge for a day or two for another recipe (ice cream, sweet tart dough, pastry cream, yellow butter cake, or lemon curd perhaps). You may want to add just a bit of water to the yolks for storage.

Whip the egg whites just until they turn opaque.

Gradually add the sugar, and beat to firm, glossy peaks.

Gently fold the nut mixture into the whites with a flexible rubber spatula. Pour the mixture into the springform pan and use the spatula to make it as even as possible.

Scatter the chopped hazelnuts over the top, and lightly press into batter. I've done this dacquoise with and without the chopped hazelnuts on top.


Bake for 25 to 30 minutes, until golden brown and firm. Cool completely on a rack. The dacquoise can be up to 2 days ahead (wrapped airtight and kept at room temperature) or frozen for up to a month.



Chocolate Hazelnut Crisp Layer

3.5 ounces bittersweet chocolate/hazelnut bar
3.5 ounces milk chocolate/hazelnut bar

2 cups rice krispies


Melt chocolate bars; stir in rice krispies. Spread over dacquoise layer.

Chill for at least 30 minutes. Remove the sides of the pan, and carefully peel off parchment layer.


This amount yields a relatively thick crunch layer. Use 1/2 to 3/4 of the recipe for a thinner layer. Feel free to use pure chocolate rather than the chocolate/nut bars, or stir in your own chopped hazelnuts into the melted chocolate.


Chocolate Mousse
(adapted from Epicurious)

4 ounces semi-sweet chocolate

2 ounces milk chocolate

1 teaspoon vanilla extract

1 pinch of Kosher salt

1 1/2 cups chilled heavy cream, separated

1/8 cup sugar


Combine chocolate, vanilla and salt in bowl.

Bring 1/2 cup cream to boil in heavy small saucepan; pour over chocolate. Let sit for one minute, then stir until smooth. Cool to room temperature, stirring occasionally.

Beat 1 cup cream and sugar in large bowl to stiff peaks. Fold into chocolate mixture.

Chill until spreadable, about 2 hours.


Chocolate-Nutella Frosting
(adapted from Chocolate Chocolate)

6 tablespoons unsalted butter

3 ounces unsweetened chocolate, melted and cooled to tepid

1/3 to 1/2 cup Nutella, depending on taste (taste is somewhat subtle with 1/3 cup)

Large pinch of Kosher salt

1 tablespoon vanilla extract

5-6 cups powdered sugar, sifted

2/3 cup milk, heated to tepid


Beat butter on medium speed for 1-2 minutes.

Blend in the melted chocolate, Nutella, salt, vanilla, 1/3 cup milk, and 2 1/2 cups powdered sugar.

Add in the rest of the milk; beat for 1 minute.

Add the rest of the powdered sugar; beat for 1 minute. Use more powdered sugar for a stiffer consistency, less for a softer consistency.

Refrigerate the frosting for 1-2 hours until spreadable.


You will have some extra frosting.




To Assemble:


Place dacquoise on a cake plate or cake round.


Cut one of the cake layers in half, horizontally. Carefully place one half on top of the dacquoise.

Spread a light layer of mousse on top.

Place the next cake layer on top of the mousse.

Spread the remaining mousse over the top and sides of the cake.

Chill for at least 30 minutes. The mousse needs to be hard enough to spread the frosting over.


Frost the cake. You will likely have frosting left over.

While frosting is still soft, cover the sides of the cake with chopped hazelnuts (I used about 1/2 cup). Refrigerate cake to set. Remove from fridge 2 hours before serving.



The birthday girl thought the cake was even better the next day, after the flavors had had a chance to meld.

Tips: This is a time-intensive cake, but you can break up the work over several days. I made the cake layers on Tuesday night and froze them and the dacquoise on Wednesday night. On Friday, I made the mousse, and assembled the cake up to the mousse. On Saturday morning I made the frosting, and I frosted the cake a few hours later. It was served Saturday night. You may also wish to make a slightly easier version of the cake, below.

Variations:

For a slightly less complicated recipe, use only the chocolate mousse or chocolate Nutella frosting for both filling and frosting the cake. You will need to make 1 1/2 to 2 recipes of the mousse if you use only mousse and 1 1/2 recipes of the frosting if you use only frosting.


Thank you Derrick for taking some of the photos!

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Friday, July 3, 2009

Coffee Cheesecake with Nutella Swirl on a Brownie Base


I frequently bake for my students. I may be fooling myself, but a yummy brownie or delicious cupcake seems to lessen the blow of getting one's less than stellar calculus exam back. I also need to give away my baked goods to my students, or my friends will soon start blaming me for sugar overload; the students never complain. Students are also excellent guinea pigs for testing out new recipes. But during semesters when I have a lot of students, I need recipes that can feed a crowd. Cheesecake is perfect - it's fancier than a brownie, easy to make, and serves a lot, especially when I use my 9 x 9 springform pan.





The recipe for this cheesecake is very similar to that of the April Daring Bakers challenge, which is itself very close to Dorie Greenspan's recipe. I added coffee extract, espresso powder, and Kahlua. I also mixed some of the batter with some warmed nutella, and added a nutella swirl. The nutella-batter was too heavy for the cheesecake batter; I got only a slight hint of a swirl on top of the cheesecake, and more of a nutella-cheesecake layer right on top of the brownie layer. It wasn't quite the look I was going for, but it's probably one of the best cheesecakes I've ever had. I especially loved the brownie base. No matter how many layers of aluminum foil I use when I make cheesecake, the water bath always seems to leak into the springform pan. Here, though, the slight leak just seemed to make the brownie base just that much fudgier. Yum.

This recipe makes a lot of cheesecake. I used a 9 x 9 springform pan and had some batter left over for two round 4" cheesecakes. If you're using an oreo-cookie or graham cracker crust, you probably won't have any batter left over after filling the 9 x 9 pan. Use two-thirds of the cheesecake batter recipe (3 eggs) for a 9" round springform pan with brownie crust (or even for a slightly shorter cheesecake in a 10" round pan).

Recipe:

For the Brownie Base (adapted from King Arthur Flour):

2 sticks (8 ounces) unsalted butter 3/4 cup (2 ounces) unsweetened cocoa powder
4 large eggs
2 cups (14 ounces) sugar
1 cup (4 1/4 ounces) Unbleached All-Purpose Flour
1/8 teaspoon salt


Preheat the oven to 350°F. Grease and flour (or spray with baking spray) a 9 x 9 square springform pan.

Melt the butter and stir in the cocoa powder. Cover, and set aside to cool.

Using an electric mixer, beat the eggs for 3 minutes, then gradually add the sugar, beating 2 to 3 minutes more. Stir in the butter/chocolate mixture. Gently fold in the flour and salt, just until combined.

Pour the batter into the prepared pan. Bake for 18 to 20 minutes. Cool completely.



For the Cheesecake:

1 Tablespoon espresso powder
1.5 Tablespoons hot water
36 ounces cream cheese (preferably Philadelphia cream cheese)

1.5 cups sugar

5 eggs

1.5 cups heavy cream

2 teaspoons vanilla extract

2 teaspoons coffee extract

1 Tablespoon Kahlua

1/4 cup Nutella, warmed


Be sure to have all ingredients at room temperature, especially the eggs and cream cheese. This will help keep cracks from forming in the top of the cheesecake.

Preheat the oven to 350°F (if you're doing the cheesecake the next day; otherwise just leave the oven on). Put a kettle of water on to boil for the waterbath. Wrap springform pan in 3-4 layers of aluminum foil to prevent (or lessen at least!) leakage.

Dissolve the espresso powder in the hot water; cover.

In a stand mixer with the paddle attachment, beat the cream cheese at medium speed for about 4 minutes, until soft and creamy. Add the sugar and beat for another 4 minutes, until the cream cheese is light. Add the eggs, one at a time, beating well (about 1 minute) and scraping sides of bowl after each addition. Beating at low speed, add the heavy cream, extracts, and espresso powder mixture. Stir in the Kahlua. The batter will be thin.

(Note: If you're using a hand mixer, you will want to increase the mixing times).


In a separate bowl, stir together about 2 cups of the batter and the nutella. Pour the remaining batter on top of the cooled brownie base. You'll want to leave a little room (half-inch or so) at the very top of the pan, but it should be nearly full (depending on your pan size and your base, you may have extra batter which can be cooked in small cake pans or muffin tins). Drop the nutella/batter mixture on top of the coffee batter in spoonfuls over the top of the cheesecake. Much of this will sink through the coffee batter. With a knife, gently swirl the nutella batter through the coffee batter.

Bake the cheesecake for about 60-75 minutes: it should hold together, but there will still be a lot of jiggle in the center. Turn the oven off, and leave the cheesecake in the oven for another hour. After one hour, remove the cake from the water bath, and let it finish cooling on the counter top. Refrigerate overnight, and bring to room temperature before serving.





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