Dark Chocolate Sheet Cake with Dark Chocolate Frosting

by

Description

A super rich, not-too-sweet, dark chocolaty sheet cake that’s perfect for any party!

Ingredients

  • 1 ¾ cups all-purpose flour
  • 1 cup dark cocoa powder (such as Hershey’s® Special Dark)
  • 2 teaspoons baking soda
  • ½ teaspoon salt
  • 1 cup firmly packed dark brown sugar
  • ½ cup white sugar
  • ½ cup unsalted butter, softened
  • 2 large eggs, at room temperature
  • 2 teaspoons vanilla extract
  • 1 cup strong brewed coffee, at room temperature
  • 1 cup buttermilk, at room temperature
  • 1 cup unsalted butter, softened
  • ¾ cup dark cocoa powder (such as Hershey’s® Special Dark), sifted
  • 1 teaspoon instant espresso powder
  • ⅛ teaspoon salt
  • 2 teaspoons vanilla extract
  • 3 cups powdered sugar, or to taste
  • 7 tablespoons heavy whipping cream, or as needed

Instructions

  1. Preheat the oven to 350 degrees F (175 degrees C). Grease a 10×15-inch rimmed baking sheet and line the bottom of the pan with parchment paper.
  2. Whisk flour
  3. cocoa powder
  4. baking soda
  5. and salt together in a bowl until thoroughly combined. Set aside.
  6. Beat brown sugar
  7. white sugar
  8. and butter together in a large bowl with an electric mixer until light and fluffy. Beat in eggs one at a time
  9. mixing well after each addition. Mix in vanilla extract. Add in 1/3 of the flour mixture
  10. and mix until just combined. Add in 1/2 of the coffee and buttermilk
  11. and mix until just combined. Continue alternating additions of the flour mixture with coffee and buttermilk
  12. mixing just until combined. Pour batter into the prepared pan; smooth into an even layer. Tap pan firmly on the counter several times to remove air bubbles.
  13. Bake in the preheated oven until a toothpick inserted into the center of the cake comes out with a few moist crumbs
  14. about 25 minutes. Do not overbake. Place cake on a wire rack and allow to cool completely.
  15. Meanwhile
  16. make the frosting. Beat butter in a large bowl until completely smooth. Mix in cocoa powder
  17. espresso powder
  18. and salt until thoroughly combined. Mix in vanilla. Add in powdered sugar 1 cup at a time
  19. mixing well after each addition. Pour in heavy cream and beat until frosting is light and fluffy
  20. 2 to 3 minutes. If frosting is too thick
  21. add more heavy cream.
  22. Spread frosting over the cooled cake.

Prep Time: 30 mins

Cook Time: 25 mins

Total Time: 1 hr 55 mins

Servings: 24

Leave a Comment