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Close up of a square piece of dark chocolate cocoa buttermilk cake with cocoa mascarpone frosting on a white plate

Cocoa Buttermilk Cake with Cocoa Mascapone Frosting

Cocoa Buttermilk Cake with Cocoa Mascapone Frosting is moist, easy to make, and scrumptious, with a creamy, chocolatey fudge-like frosting.
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Ingredients

For the cake:

  • 3/4 cup butter room temperature
  • 3 eggs room temperature
  • 2⅓ cups all purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 1 tsp baking soda
  • 3/4 tsp baking powder
  • 1/2 tsp salt
  • 1 cup granulated sugar
  • 1 cup packed brown sugar
  • 2 tsp anilla
  • 1 ½ cups buttermilk or sour milk

For the frosting:

  • 4 oz mascarpone cheese softened
  • 1/2 cup butter softened
  • 1/3 cup cocoa powder
  • 2 TBSP heavy whipping cream
  • 1 tsp vanilla
  • cups powdered sugar

For the cake:

Instructions

For the cake:

  • Grease one 13 x 9 inch pan. Set aside.
  • Preheat oven to 350.
  • In a medium bowl combine the flour, cocoa powder, salt, baking soda, baking powder, mix and set aside.
  • In bowl of a mixer, beat butter on high speed for 30 seconds.
  • Add sugar and brown sugar, beat until combined.
  • Scrape sides of bowl and beat another 2 minutes.
  • Add eggs one at a time, beating well after each addition, then add vanilla.
  • Add flour mixture and buttermilk alternately to sugar egg mixture, on low speed just until combined.
  • Beat an additional 20 seconds.
  • Pour into prepared pan and bake for 40-45 minutes.
  • Check after 35 minutes as your oven may run hotter than mine.
  • Check with a toothpick to be sure it is done.
  • Once cooled spread with frosting.

For the frosting:

  • In a large bowl combine mascarpone cheese, and butter, cocoa powder, heavy cream and vanilla.
  • Beat until creamy.
  • Gradually add powdered sugar and continue to mix on LOW until smooth.
  • Add additional cream to make it the consistency that you like.
Course: Dessert
Cuisine: American
Keyword: cocoa buttermilk cake, cocoa mascarpone frosting