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Giant Ferrero Rocher is the Dessert Your Life Has Been Missing

This is the best dessert we have ever seen! A giant Ferrero Rocher! These delightful little treats, we have always thought were a little too small, well now... problem solved.

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Although the cake looks very similar to the original product, the taste is not identical, however it's the novelty of it all that has us hooked!

It's three layers of moist chocolate cake and three layers of hazelnut-speckled chocolate-hazelnut mousse. 

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Thank you to Sugar Hero for bringing this amazing creation to us! 

Serves 4 people.

Ingredients

For the Chocolate Cake:
•6 oz butter, at room temperature
•4.75 oz (2/3 cup) granulated sugar
•5 oz (2/3 cup packed) brown sugar
•2 eggs, at room temperature
•2 tsp vanilla extract
•8 oz (1 cup) buttermilk, at room temperature
•4 oz (1/2 cup) sour cream, at room temperature
•2 tbsp water or brewed coffee
•7.8 oz (1¾ cups) all-purpose flour
•3 oz (1 cup) sifted unsweetened cocoa powder
•1½ tsp baking soda
•½ tsp salt

For the Chocolate Shells and Assembly:
•2 lbs chocolate candy coating
•4 oz (about 1 cup) toasted and skinned hazelnuts, coarsely chopped
•4" spherical chocolate molds (can substitute spherical cake pans instead)

For the Hazelnut Mousse:
•9 oz semi-sweet chocolate
•12 oz (2 cups) heavy cream, divided use
•11 oz (1 cup) Nutella chocolate-hazelnut spread
•Pinch salt
•1 packet (2½ tsp) unflavored powdered gelatin
•3 tbsp water
•2 oz (1/2 cup) toasted and skinned hazelnuts, chopped

Instructions

To Make the Chocolate Cake:

Line a rimmed 18x13-inch half sheet pan with parchment or foil, and spray the pan with nonstick cooking spray. Preheat the oven to 350 F.

Add the butter and both sugars to the bowl of a large stand mixer fitted with a paddle attachment. Beat them together on medium-high speed, until light and fluffy, about 5 minutes. Add the eggs one at a time, beating well after each addition. Add the vanilla extract and mix it in.

In a separate bowl, whisk together the buttermilk, sour cream, and water (or coffee, if using). In a different bowl, sift together the flour, cocoa powder, baking soda, and salt. With the mixer running on low, add a quarter of the sifted flour mixture. When the flour streaks have almost all disappeared, add a third of the liquid to the mixing bowl. When that’s incorporated, continue to add the drys and wets in an alternating pattern, ending with the dry ingredients.

When the dry ingredients are nearly incorporated, stop the mixer. Scrape down the bottom and sides of the bowl with a rubber spatula, and finish mixing the cake by hand. Pour the batter into the prepared pan and smooth it into an even layer. Bake the cake for about 15 minutes, until a toothpick inserted into the center comes out with just a few moist crumbs attached. Cool the cake completely before using.

The cake can be made several days in advance and kept, well-wrapped and refrigerated or frozen, until ready to use. If you freeze it, make sure it's partially defrosted before you use it so you can cut it easily.

To Make the Chocolate Shells:

Make sure that your spherical molds are clean and dry. If you are using cake pans instead of actual chocolate molds, it might help to rub a very, very thin layer of nonstick cooking spray into the metal. It shouldn't be greasy, but a very light coating can help the chocolate release.

Melt 1 lb of the candy coating in a microwave-safe bowl, stirring after every 30 seconds to prevent overheating. Let the coating sit at room temperature until it it cools down to just slightly warmer than room temperature. It should still be fluid but should have a thicker texture.

Pour a few spoonfuls of chocolate into the bottom of a mold and swirl it around so that it covers the bottom and the sides evenly. Turn it upside-down and let any excess drip back into the bowl, so you have a thin and even coating on the mold. Place the bowl upside-down on a parchment-lined baking sheet, and repeat with your remaining molds. Refrigerate the tray to set the chocolate, for about 15 minutes, then freeze them for 2-3 minutes more to get the chocolate very cold. It contracts when it's cold, and it should be easy to pop the chocolate spheres out of the molds once they've been in the freezer.

To remove the spheres, gently flex the molds. If you're using cake pans, it's easiest to turn them upside down and very gently use one hand to coax the chocolate out. Since it is a thin layer, it can break if not handled carefully, so try to be soft. If it does break, you can always dab some chocolate in the crack and re-chill until set. The chocolate shell will be covered anyhow, so it doesn't matter if it doesn't look perfect!

Repeat this process as many times as necessary until you have 10 half-spheres—this recipe makes 5 Rocher cakes total. If you have extra chocolate, consider making an extra sphere or two in case of breakage during assembly.

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To Make the Hazelnut Mousse:
Combine the chocolate, ¾ cup of cream, Nutella, and salt in a microwave-safe bowl. Microwave in 30-second increments, stirring every 30 seconds, until the chocolate has melted and the mixture is smooth. Pour it into a large bowl, and let it cool to room temperature, whisking occasionally.

While you wait for the chocolate mixture to cool, prepare the gelatin. Whisk together the gelatin and the cold water in a small bowl, and set it aside to let the gelatin absorb the water. When the chocolate is at room temperature, microwave the bowl of gelatin for 15 seconds, until it is melted. Whisk the melted gelatin and chocolate together.

Whip the remaining 1¼ cups of heavy cream to firm peaks. Fold half of the whipped cream into the chocolate, and once it’s incorporated, gently fold in the remaining whipped cream. Add the hazelnuts and fold them in last. Use immediately. The mousse will start to set soon after it's finished, so do not try to make it in advance and then assemble the cakes later.

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To Assemble:
  1. Cut a circle of cake that will fit in the bottom of one of the chocolate half-spheres. Press it into the sphere, then top it with a layer of hazelnut mousse and smooth out the top of the mousse. Cut another circle of cake that will fit on top of the mousse—this one will be a larger size. Press the circle of cake on top of the mousse, and if necessary, trim the top so that it's level with the top of the shell.
  2. In a second chocolate shell, reverse the order: spoon some mousse into the bottom of the shell, and top it with a cake round. Place more mousse on top of that round, and smooth it so that it's flush with the top of this chocolate shell. Now, when the shells are fitted together, they will have three layers of mousse and three layers of cake in alternating order. Melt the remaining 1 lb of chocolate coating and brush a thin layer around the edges of the spheres to seal them together. Rest the assembled ball in a bowl or in the cavity of a muffin tin (so that it is stable and doesn't move) while you assemble the rest of the mini cakes.
  3. To finish them off, re-warm the remaining chocolate coating, if necessary, and stir in the coarsely chopped hazelnuts. Set them in the cavities of a muffin tin, and use a pastry brush to brush the nut-studded chocolate on top of the chocolate shells. You will probably only be able to really coat the top half of each shell with chocolate, so once that's done, refrigerate the cakes to set the chocolate coating, for about 15 minutes. Once set, turn the cakes upside down and brush the bottoms with the chocolate-nut mixture, until the spheres are entirely covered in a layer of bumpy, nut-packed chocolate. If you want, you can scatter a few chopped hazelnuts on top so that a few of them show through the chocolate. Refrigerate the tray again to set the chocolate completely.
  4. To serve, wrap each cake individually in gold foil, and set in a paper baking cup. These keep very well, because the chocolate coating prevents the cake from getting stale, and the mousse keeps things moist. Well-wrapped, they will keep for up to a week in the refrigerator.

Source: Sugar Hero

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