Yellow Layer Cake - cooking recipe

Ingredients

CAKE
1/3 cup sugar
1/2 cup vegetable oil
1/2 cup water
4 eggs
6 cups Pillsbury Plus yellow cake mix (Eachbox of cake mix yields 3 cups dry mix)
1 1/2 cups sour cream
FROSTING
1 1/2 cups butter, softened
1 cup powdered unsweetened cocoa
4 cups powdered sugar
1/2 cup milk

Preparation

FOR CAKE:.
Grease and flour two 9\" round cake pans. Combine sugar, oil, water, eggs and cake mix in a large bowl. Add sour cream and mix thoroughly. Pour batter into the prepared cake pans. Back at 350 for 45-55 minutes, or until toothpick inserted in center comes out celan. Cool layers in pans on a wire rack for 5 minutes; remove from pans by inverting onto wire rack, and continue to cool.
Makes one double layer cake.
FOR FROSTING:.
Cream butter well in a large bowl. Add cocoa and powdered sugar, mix at low speed and add milk. Beat until creamy. Place on cake layer on a plate and spread icing evenly over the top. Set the second layer on top of the first and spread icing on the sides and top of the cake.