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Peppermint Mocha Cake Roll

Soft mocha cake and peppermint chocolate mousse are rolled together to make a beautiful and festive Christmas dessert.
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Prep Time 10 minutes
Cook Time 15 minutes
Cooling Time 3 hours
Total Time 3 hours 25 minutes
Servings: 10 servings
Course: Dessert
Cuisine: American, French
Ingredients Method

Ingredients
  

Cake Ingredients:
  • 4 large eggs separated
  • 1/3 cup granulated sugar
  • 1/3 cup packed light or dark brown sugar
  • 1 teaspoon espresso powder
  • 1/4 cup unsalted butter melted
  • 1 teaspoon peppermint extract
  • 1/2 cup Swan’s Down Cake Flour
  • 3 Tablespoons unsweetened cocoa powder
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • Powdered sugar for rolling
Chocolate Icing Ingredients:
  • 1 cup unsalted butter softened to room temperature
  • 3 and 1/2 cups powdered sugar
  • 1/2 cup unsweetened cocoa powder
  • 3 Tablespoons heavy cream
  • 1/4 teaspoon salt
  • 2 teaspoons pure peppermint extract

Method
 

Making the Cake
  1. Preheat oven to 350°F. Spray a 12×17 inch baking pan with nonstick spray or grease with butter, so the parchment paper sticks. Then line it with parchment paper so the cake seamlessly releases. Spray or grease the parchment paper too. We want an extremely nonstick surface for this cake roll.
  2. Beat the egg whites and granulated sugar together in a medium bowl on high speed for 5 minutes or until stiff peaks form. Set aside. In another bowl, beat the egg yolks, brown sugar, and peppermint extract together until pale and creamy, about 2 minutes.
  3. Sift the flour, cocoa powder, baking powder, and salt together into a large bowl. Pour the melted butter, coffee, and egg yolk mixture over the dry ingredients. Beat everything together on medium speed until completely combined. Using a rubber spatula or wooden spoon, gently fold in the egg whites until completely combined. Avoid over-mixing and deflating those whites. Batter will be very light.
  4. Spread batter evenly into prepared pan. It will be a very thin layer. Shimmy the pan on the counter to smooth out the top. Bake for 10 minutes or until the top of the cake gently springs back when touched with your finger. Do NOT over-bake.
  5. As the cake bakes, place a thin kitchen towel flat on the counter. Sprinkle with a light coating of powdered sugar. Once the cake comes out of the oven, immediately invert it onto the towel. Peel off the parchment paper that was on the bottom of the cake as it baked. Starting with the narrow end, slowly and gently roll the cake up with the towel. The cake will be warm. Allow the cake to cool completely rolled up in the towel. Place in the refrigerator to speed it up, about 2-3 hours.
Making the Icing
  1. With a handheld or stand mixer fitted with a paddle or whisk attachment, beat the butter on medium speed until creamy – about 2 minutes. Add powdered sugar, cocoa powder, heavy cream, salt, and peppermint extract. Beat on low speed for 30 seconds, then increase to high speed and beat for 1 full minute. Add 1/4 cup more confectioners’ sugar or cocoa powder if frosting is too thin or another Tablespoon of cream if frosting is too thick.
Putting it all Together
  1. Unroll the cake carefully and remove the towel. Allow the end to remain slightly curled.
  2. Spread your frosting all over the surface of the cake. Tightly re-roll the cake, wrap in plastic wrap, and refrigerate 30 minutes.
  3. Remove the cake from the refrigerator. Dust the top with powdered sugar, slice into half-inch pieces, and enjoy!