Ingredients

  • FOR THE CHOCOLATE DEVIL'S FOOD LAYER CAKE:
  • 1-1/2 cup All-purpose Flour
  • 1 teaspoon Baking Powder
  • 1/2 teaspoons Baking Soda
  • 1/4 teaspoons Salt
  • 1-1/4 cup Boiling Water
  • 4 ounces, weight Unsweetened Chocolate, Chopped
  • 1/2 cups Dutch Processed Cocoa Powder
  • 1-1/4 cup Unsalted Butter, Softened
  • 1-1/2 cup Packed Light Brown Sugar
  • 3 pieces Large Egg, Room Temperature
  • 1/2 cups Sour Cream, Room Temperature
  • 1 teaspoon Vanilla Extract
  • FOR THE NUTELLA BUTTERCREAM:
  • 2 sticks Unsalted Butter, Room Temperature
  • 1/2 cups Cocoa Powder
  • 1 cup Icing Sugar
  • 1/2 cups Nutella
  • 2 Tablespoons Heavy Cream
  • 10 whole Fresh Strawberries For Garnish

Method

  • Preheat oven to 350°F. Grease two 9-inch round cake pans, and line the bottoms with parchment paper.
  • In a large bowl, whisk the flour, baking powder, baking soda and salt.
  • In another bowl, whisk the boiling water, chocolate and cocoa powder until smooth.
  • Beat butter and sugar together on medium speed in a bowl of a standing mixer until light and fluffy. Beat in eggs, one at a time. Beat in sour cream and vanilla extract.
  • Reduce the speed to low and beat in 1/3 of the flour mixture, followed by half of the chocolate mixture. Repeat with another 1/3 of the flour mixture and the remaining chocolate mixture. Beat in the remaining flour mixture until just incorporated.
  • Divide the batter and pour into the prepared pans, smoothing the surface with a spatula. Bake 20 to 25 minutes or until a toothpick inserted into the cake comes out clean.
  • Place the cakes (in the pans) on a wire rack to cool. Then invert the cakes onto a greased rack. Cool completely before frosting.
  • To prepare the buttercream, beat butter on high until fluffy. Add cocoa powder and sugar and beat until incorporated.
  • Add Nutella and cream, and beat until you get to the right consistency.
  • To assemble the cake, place one cake layer on your serving plate and spread with half of the buttercream. Place another cake layer on top, and gently press down a little bit. Spread with the remaining buttercream. Garnish with the strawberries.
  • Or fit a pasty bag with a big round tip and fill with about 2/3 of the buttercream. Pipe a ring of buttercream around the outer edge of the cake. Starting at the inner edge of the border, continue piping a spiral of buttercream inward. Smooth the inside frosting with an offset spatula, leaving the edges untouched. Place another cake layer on top, and gently press down a little bit. Spread with the remaining buttercream. Garnish with the strawberries.
  • Cover and refrigerate the cake. Leave cake in room temperature for at least 30 minutes before serving.