1 box butter cake mix (using milk instead of water)
1 stick of margarine
1 box confectioners sugar
1 cup peanut butter
1. Mix cake according to directions on box and make 3 layers.
1. Combine the ingredients, add a little milk to make icing spread easier.
2. Spread icing on top of each layer and on sides of cake. You can add chopped peanuts on top of cake.