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A perfectly sliced bakery-style chocolate cake on a plate

Chocolate Sheet Cake

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Ingredients Method

Ingredients
  

  • Cake
  • 2 cups all-purpose flour
  • 2 cups granulated sugar
  • 3/4 cup unsweetened cocoa powder
  • 2 teaspoons baking soda
  • 1 teaspoon salt
  • 2 large eggs
  • 1 cup buttermilk
  • 1 cup warm water
  • 1/3 cup vegetable oil
  • 1 teaspoon vanilla extract
  • Frosting
  • 1/2 cup salted butter
  • 1/3 cup unsweetened cocoa powder
  • 1/3 cup buttermilk
  • 3 cups powdered sugar
  • 1 teaspoon vanilla extract
  • 1 cup chopped pecans or walnuts

Method
 

  1. For the Cake
  2. Preheat oven to 350 degrees Fahrenheit. Lightly grease a large 13x18 inch baking sheet pan.
  3. Stir together flour, sugar, and cocoa in a bowl. Add your baking soda and salt.
  4. Add eggs, buttermilk, warm water, oil, and vanilla. Whisk until combined and smooth.
  5. Pour batter into the prepared baking sheet. Spread the mixture evenly.
  6. Bake for twenty to twenty-five minutes. A toothpick should come out clean.
  7. Cool the cake on a wire rack. Let it sit for fifteen minutes before frosting.
  8. For the Frosting
  9. Melt butter in a medium saucepan over low heat. Whisk in the cocoa powder smoothly.
  10. Pour in the liquid buttermilk. Increase the heat to medium-high.
  11. Bring the mixture to a simmer. Whisk this liquid constantly.
  12. Remove from heat and whisk in powdered sugar. Add your vanilla extract and blend well.
  13. Pour hot frosting over the cake. Smooth it out with a rubber spatula.
  14. Sprinkle chopped pecans on top immediately. Let everything cool completely before serving.