A delightful and indulgent Texas-style chocolate sheet cake covered in creamy cocoa buttercream frosting for a dessert that's sure to be a hit with family and friends.
Preheat oven to 350°F and grease a 9x13 inch sheet pan.
2
In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, baking soda, and salt. Set aside.
3
In a separate mixing bowl, whisk together the buttermilk, eggs, and vanilla extract. Set aside.
4
In a saucepan over medium heat, melt the unsalted butter with the unsweetened cocoa powder and water, stirring frequently until the mixture comes to a boil.
5
Pour the melted chocolate mixture into the flour mixture and stir until well combined.
6
Add the buttermilk mixture to the batter and mix until smooth and evenly blended.
7
Pour the cake batter into the greased sheet pan and spread evenly.
8
Bake for 20-25 minutes or until a toothpick inserted into the center comes out clean.
9
Remove the cake from the oven and place it on a wire rack to cool.
FROSTING
10
In a saucepan over medium heat, melt the unsalted butter with the unsweetened cocoa powder and buttermilk, stirring frequently until smooth and combined.
11
Remove the saucepan from heat and gradually stir in the confectioners sugar and vanilla extract until a smooth and creamy frosting forms.
12
Pour the frosting over the warm cake, spreading it evenly with a spatula. Let the frosting set before cutting and serving.