Rock Road Cake Icing
["2 tbsp cocoa", "2 tbsp margarine", "1/2 box conf. sugar", "3 tbsp evaporated milk"]
["Melt butter over low heat in a small pan. Add cocoa, conf. sugar and milk. Stir and heat until everything is blended. Pour over cake (leave in pan) and spread."]
["cocoa", "margarine", "sugar", "milk"]