Ho Ho Cake
["1 stick margarine", "1/2 c. white shortening", "1 c. sugar", "2/3 c. milk"]
["Cream margarine, white shortening and sugar.", "Cream well for 15 minutes until smooth consistency, then add milk.", "Beat until smooth and blended.", "Spread over cooled cake.", "Chill before frosting with chocolate topping."]
["margarine", "white shortening", "sugar", "milk"]