Preheat oven to 375 degrees. ... out clean. Prepare cocoa icing. Frost cake while still ... stirring constantly. Remove from heat. Add to powdered sugar ... in nuts and vanilla.
Combine butter, cocoa, and milk in saucepan ... rapid boil. Remove from heat and add powdered sugar, vanilla, and nuts. Spread icing on a hot, 11 x 16 inch cake. Cool before cutting.