Cooked Chocolate Frosting - cooking recipe

Ingredients

1 stick margarine
2 c. sugar
1/2 c. milk
1 tsp. vanilla
2 Tbsp. cocoa

Preparation

Melt margarine in heavy saucepan or iron skillet.
Add other ingredients and bring to a boil.
Cook 2 or 3 minutes.
Cool and spread on layer cake.