Chocolate Butter Frosting - cooking recipe

Ingredients

3/4 cup butter, softened
8 1/2 cups powdered sugar (about 2 lbs)
1/2 cup unsweetened cocoa powder
1/4 cup milk
2 teaspoons vanilla
extra milk

Preparation

In a very large mixing bowl beat butter until smooth. Gradually add 2 cups of the powdered sugar and the 1/2 cup of cocoa powder, beating well. Slowly beat in the 1/4 cup of milk and the vanilla.
Gradually beat in remaining powdered sugar. Beat in enough additional milk to reach spreading consistency. This frosts the tops and sides of two 8 or 9 inch cake layers.