Cocoa Frosting

1/2 cup butter, cut into pieces

1/4 cup cocoa

1/4 cup buttermilk

1 pound powdered sugar

1 teaspoon vanilla extract

1 cup chopped walnuts

In a saucepan over medium heat stir butter, cocoa, and buttermilk until butter is melted and ingredients are hot and blended. Remove from heat and add powdered sugar and vanilla. Beat with electric mixer until frosting is smooth. Spread over cake and sprinkle with walnuts.

Frosts a 12- by 15-inch cake or two 8- or 9-inch cake layers