- 8 ounces (2 sticks) butter, softened
- 8 ounces sour cream
- 3 cups sugar
- 6 eggs
- 1 teaspoon pure vanilla extract
- 2 1/4 cups all-purpose flour
- 1 teaspoon baking powder
- 3/4 cup cocoa
Using an electric mixer, cream together the butter, sour cream, and sugar. Add the eggs, 2 at a time, beating well after each addition. Add the vanilla.
In another bowl, stir together the flour, baking powder, and cocoa. Add 1/2 the flour mixture to the creamed mixture, beat well, add the remaining 1/2 flour mixture, and continue to beat at medium speed for 2 minutes. Pour the batter into the prepared pan and bake for 1 hour 15 minutes. Continue to bake for an additional 15 minutes if necessary, but do not open the oven to check the cake for at least 1 hour.