Boston Blackout Cake Recipes

BROOKLYN BLACKOUT CAKE

Steps:

• In a small heavy saucepan, mix sugar, cornstarch and salt. Whisk in milk. Cook and stir over medium heat until thickened and bubbly. Reduce heat to low; cook and stir 2 minutes longer. Stir in chocolate until melted. Transfer to a bowl; stir in vanilla. Cool slightly, stirring occasionally. Press plastic wrap onto surface of pudding. Refrigerate, covered, 2 hours or until cold., Preheat oven to 325°. Line bottoms of two greased 8-in. round baking pans with parchment; grease paper. In a small bowl, whisk flour, baking powder, baking soda and salt. In a large saucepan, melt butter over medium heat. Add cocoa; cook and stir until blended. Stir in sugars. Remove from heat; stir in buttermilk, coffee and vanilla. Whisk in eggs, one at a time, until blended. Stir in flour mixture just until combined., Transfer batter to prepared pans. Bake 35-40 minutes or until toothpick inserted in center comes out clean. Cool in pans 10 minutes before removing to wire racks; remove parchment. Cool completely., For frosting, in the top of a double boiler or a metal bowl over hot water, melt chocolate and butter; stir until smooth. Remove from heat. Whisk in hot water, all at once. Whisk in corn syrup and vanilla. Refrigerate 25-30 minutes or just until spreadable., Using a long serrated knife, cut each cake horizontally in half. Place a cake layer on a serving plate. Spread with half of the pudding. Repeat layers. Top with a third cake layer. Spread frosting over top and sides of cake., Crumble remaining cake layer; sprinkle over top and sides of cake, pressing lightly to adhere. Refrigerate leftovers.

BLACKOUT CAKE

Steps:

• Heat the oven to 375 degrees.
• To make the cake, place the cocoa in a small bowl and whisk in the boiling water to form a paste. Combine the chocolate and milk in a saucepan over medium heat. Stir frequently as the mixture warms and the chocolate melts, about 3 minutes. Remove from heat. Whisk a small amount of the heated chocolate milk into the cocoa paste and then whisk the cocoa mixture into the milk mixture. Return to heat, stir for one minute, remove and cool until tepid.
• In the bowl of a mixer, cream the sugar and butter together. Beat in the egg yolks one at a time and add the vanilla. Slowly stir in the chocolate mixture.
• Combine the flour, baking powder, salt and baking soda. Using a spatula or a wooden spoon, slowly add the flour mixture to the chocolate mixture. In another bowl, whip the egg whites to form soft peaks and, using a rubber spatula, gently fold the egg whites into the batter.
• Butter and lightly flour two 8-inch round cake pans and divide the batter between the two pans. Bake for 45 minutes and cool on a rack for 15 minutes. Gently remove the cakes from the pans and continue to cool.
• While the cake is baking, make the filling. Put the cocoa into a saucepan and pour in the boiling water and place over low heat. Add the sugar and chocolate. Dissolve the cornstarch in the cold water to make a smooth paste. Whisk the cornstarch into the water and chocolate, add the salt and bring it to a boil, stirring constantly. Boil for one minute.
• Remove the pan from the heat, whisk in the vanilla and the butter, and transfer the mixture to a bowl and refrigerate until cool.
• Make the frosting. In a double boiler, melt the chocolate. Remove from heat and whisk in the butter, one tablespoon at a time, returning to heat if necessary to melt the butter.
• Whisk in the hot water all at once and stir until smooth. Whisk in the corn syrup and the vanilla. Refrigerate for 20 to 30 minutes before using.
• Assemble the cake. Use a sharp knife to slice each cake into two disks to form four layers. Set one layer aside. Place one layer on a cake round or plate. Generously swath the layer with filling. Add the second layer and repeat. Add the third layer. Quickly apply a layer of frosting to the top and the sides of the cake and refrigerate for 10 minutes. Meanwhile, crumble the remaining cake layer. Apply a second layer of frosting to the cake, press cake crumbs into the top and sides of the cake, and serve within 24 hours. Store in a cool place.

BOSTON CREAM CAKE

Steps:

• Prepare cake batter according to package directions, adding lemon extract. Pour into a greased and floured 9-in. round baking pan. Bake at 350° for 25 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pan to a wire rack to cool completely., In a bowl, whisk milk and pudding mix for 2 minutes; refrigerate. In a heavy saucepan or microwave; melt chocolate and butter, stir until smooth. Stir in confectioners' sugar until crumbly. Stir in hot water, 1 teaspoon at a time, until smooth. Split cake into two horizontal layers. Spread pudding on bottom layer. Place second layer over pudding. Pour chocolate glaze over top, letting it drizzle down the sides. Store in the refrigerator.

BLACKOUT CAKE

Steps:

• To make the Chocolate Pudding: Combine 1 cup milk with 2 tablespoons sugar in a small saucepan and bring to just under a boil.
• In a mixing bowl, combine remaining sugar with salt, cocoa, and cornstarch. Whisk in remaining 1/2 cup unheated milk. Gradually whisk in hot milk and place entire mixture back into the saucepan. Heat, over medium heat, stirring, until mixture thickens and just starts to bubble.
• Whisk in egg and egg yolk and cook, stirring, for 30 seconds. Remove from the heat and whisk in chopped chocolate and butter. When both are melted, strain pudding through a fine-mesh strainer, and cool. Cover with plastic and reserve in refrigerator.
• To make the Cake: Preheat oven to 350 degrees F. Lightly butter 2 (8-inch) cake pans and line with parchment. Butter the parchment and flour pans, shaking out the excess.
• Sift together flour, cocoa, baking soda, baking powder, and salt. Reserve.
• In a mixer with a whip attachment, beat eggs and sugar until thick and lemon-colored. Beat in vegetable oil. Alternately add dry ingredients with buttermilk, scraping the bowl once or twice. Add the coffee and vanilla to form a thin batter. Divide between prepared cake pans.
• Bake until a toothpick inserted in the center of a cake comes out clean, about 40 to 45 minutes. Cool in pan for 15 minutes. Invert onto cooling racks, peel off paper and cool completely.
• When cool, split each cake in half with a serrated slicing knife. Reserve 1 layer for another use. Spread bottom layer with half of the reserved Chocolate Pudding. Place second layer on top and spread with remaining pudding. Top with last cake layer.
• To make the Icing: Over a double boiler, melt chocolate with butter. Remove from heat, whisk in brewed coffee, corn syrup, and vanilla. Place icing over an ice bath and chill, whisking often until the mixture is of soft but a spreadable consistency. Working quickly, ice the sides and top of cake.
• In a food processor, pulse the cookies into crumbs. Press the crumbs onto sides and top of cake.
• Serve cake at room temperature. If holding for more than 2 hours, store in refrigerator for up to 48 hours, but bring to room temperature before serving.

BROOKLYN BLACKOUT CAKE

Steps:

• Make the custard first as it needs to chill. Put all the ingredients, except the vanilla, in a large pan and bring gently to the boil, whisking all the time, until the chocolate has melted and you have a silky, thick custard. It will take 5-7 mins from cold. Stir in the vanilla and a generous pinch of salt, then scrape the custard into a wide, shallow bowl. Cover the surface with cling film, cool, then chill for at least 3 hrs or until cold and set.
• Heat oven to 180C/160C fan/gas 4. Grease then line the bases of 2 x 20cm sandwich tins. Melt the butter in a pan, then remove from the heat and beat in the oil, buttermilk, coffee and eggs. In a large bowl, whisk the dry ingredients togetherplus 1/4 tsp salt (saves sifting) and squish any resistant lumps of sugar with your fingers. Tip in the wet ingredients and whisk until smooth.
• Divide the batter between the prepared tins and bake for 25-30 mins until risen and a skewer inserted into the middle of the cakes comes out clean. Cool for 10 mins, then transfer to a rack to cool completely, parchment-side down.
• Remove the parchment linings from the cakes. If the cakes are domed, trim them flat. Now cut each cake across the middle using a large serrated knife. Put your least successful layer and any trimmings into a processor and pulse it to crumbs. Tip into a large bowl.
• Sit one layer on a cake plate and spread it with a quarter of the custard. Sandwich the next layer on top, add another quarter of the custard, then top with the final layer of cake. Spoon the remaining custard on top of the cake, then spread it around the top and down the sides until smooth. Chill for 15 mins to firm up the custard again.
• Hold the cake over the bowl containing the crumbs, then sprinkle and gently press a layer of crumbs all over the cake. Brush any excess from the plate. You'll have some crumbs left. Chill for 2 hrs, or longer, before serving, and eat it cold. Can be made up to 2 days ahead. The cake gets fudgier and more enticing the longer you leave it.

BOSTON CREAM PIE

Steps:

• Make the custard: In a medium saucepan, whisk together egg yolks and sugar until well combined. Whisk in cornstarch and salt. In a slow, steady stream, whisk in milk and then the cream. Add butter. Cook mixture over medium-low heat, stirring constantly with a wooden spoon, just until it starts to thicken. Immediately whisk mixture until smooth, then continue to cook and stir custard until it has come to a very low boil for 2 minutes, about 6 to 8 minutes total. Strain custard through a fine mesh sieve into a small bowl, pushing it through with a small spatula. Stir in vanilla. Cover with plastic wrap, pressing the plastic directly onto the surface. Chill for at least 3 hours and up to 24 hours.
• Prepare the cake: Heat oven to 325 degrees. Butter a 9-by-2-inch round baking pan, generously greasing the sides, and line it with parchment paper. Butter parchment paper. In a medium bowl, whisk together flour, baking powder and salt.
• In a small saucepan, bring the milk and butter to a simmer over medium heat. When the butter is melted, remove pan from heat. In a large bowl, beat eggs and sugar with an electric mixer until pale and thick, about 4 to 6 minutes. With the mixer running on low, add the milk mixture and beat until combined. Then add flour mixture and vanilla and beat until combined.
• Transfer batter to the prepared pan and smooth the top. Bake until a toothpick inserted into the center comes out clean, 30 to 35 minutes.
• Transfer to a rack and let cool 10 minutes. With a very thin knife, cut around the edge to release the cake from the side of the pan. Carefully flip the cake onto the rack, then turn it right-side-up to cool completely.
• Assemble the cake: Using a serrated knife, carefully cut the cake into two layers and place the bottom layer on a serving plate. Stir custard, and spread it onto the cut side of the bottom half. Replace the top half of the cake, cut side down.
• Prepare the glaze: In a small saucepan over medium-low, heat the cream to a simmer. Remove the pot from the heat and pour cream over the chocolate chips, oil, salt and let stand for 3 minutes. Whisk until smooth. Spread the glaze evenly over the top of the cake.

BROOKLYN BLACKOUT CAKE

Steps:

• In a small bowl, whisk together the ¼ cup whole milk and the cornstarch until smooth. Set aside.
• In a medium saucepan, combine the remaining 1¾ cups milk, sugar, dark chocolate, dark Dutch-process cocoa powder, vanilla extract and sea salt. Heat over medium-low heat, whisking, until the chocolate is melted.
• Whisk the cornstarch mixture into the chocolate mixture until fully incorporated.
• Reduce the heat to low, and continue to stir briskly with a wooden spoon or a heatproof spatula. The mixture will come to a simmer and will slowly begin to thicken.
• Continue to cook for 1 to 2 minutes, or until the pudding coats the back of the spoon and slowly drips off. It will be thick and will just be starting to bubble. Remove the pudding from the heat and pour into 4 serving ramekins or bowls. Let cool.
• Cover with plastic wrap, refrigerate the pudding until it sets, and serve.
• Cut the cold butter into ½-inch pieces. Let it come to room temperature.
• In the bowl of a stand mixer fitted with a paddle attachment, combine the butter, 3 cups of the confectioners' sugar, ½ cup dark Dutch-process cocoa powder, ¼ teaspoon salt, and ¾ cup Salted Dark Chocolate Pudding, and mix on low until just incorporated. Then beat on medium-high until the mixture is creamy and ingredients are incorporated, about 1 minute. Scrape down the sides of the bowl with a rubber spatula.
• Add more confectioners' sugar, 1 cup at a time, and mix on low until the frosting is thick but spreadable. Beat for 1 minute after each addition. You may not need to add all the remaining sugar. Once you have your desired consistency, scrape down the sides of the bowl.
• Raise the speed to medium-high, and beat for 3 to 4 minutes, or until very light and fluffy. The buttercream should be thick but spreadable. If the buttercream appears too thick, add more cream, 1 tablespoon at a time. If it appears too thin, add more confectioners' sugar, 1 heaping tablespoon at a time.
• Preheat the oven to 350ºF. Grease two 9-inch cake pans with butter and dust with flour. Line with parchment rounds and grease the rounds.
• In a large heavy saucepan over medium heat, bring the stout and unsalted butter to a simmer. (You can also melt the butter in your oven or in a large, microwave-safe bowl in a microwave oven and then whisk in the beer.) Remove the stout-butter mixture from the heat, add the Dutch-process cocoa powder and whisk until the mixture is smooth. Let cool for 5 minutes.
• While the stout-butter mixture cools, in a large bowl, whisk together the flour, sugar, baking soda and salt.
• In a separate large bowl, whisk together the sour cream and eggs.
• Add the stout-butter mixture to the egg mixture and whisk to combine. Then add the flour mixture, and combine with a rubber spatula until all the ingredients are incorporated and the batter is smooth, with no lumps. Be sure to scrape the bottom of the bowl to incorporate any dry flour bits.
• Divide the batter equally between the prepared cake pans. Bake for 35 to 40 minutes, or until a toothpick inserted in the center of each layer comes out clean. Transfer to a rack to cool.
• Frost the cake with the Dark Chocolate Pudding Buttercream.

BLACKOUT CAKE

Steps:

• Preheat oven to 350 degrees F.
• Grease and flour 2 9-inch cake pans.
• Tap out excess flour.
• In a large bowl beat together butter and sugar until light and fluffy, about 1-2 minutes.
• Add eggs and vanilla extract; beat till well blended.
• Add melted chocolate and beat 1-2 minutes.
• Mix together flour and baking soda and salt.
• Add to chocolate mixture in 2 additions alternately with the buttermilk.
• Beat till well blended.
• On low speed, add boiling water and beat till smooth.
• (Batter will be thin.) Pour into prepared pans.
• Bake for 35-40 minutes or until tester inserted in center comes out clean.
• Let cool in pans for 10 to 15 minutes.
• Turn out onto wire racks and cool completely.
• For Ganache:Melt chocolate chips and cream together and stir until smooth.
• Stir in butter and vanilla.
• Cover and refrigerate for 1 to 1 1/2 hours until ganache holds its shape and is thick enough to spread on cake layers.
• Cover one layer with a little more than 1/3 of the ganache.
• Top with second layer; frost top and sides with remaining ganache.
• Press almond slivers into sides of cake.
• Refrigerate 3 to 4 hours for ganache to firm back up for easier slicing.