Frosting For Chocolate Cake - cooking recipe

Ingredients

1/2 c. margarine
1/2 c. shortening
1 c. milk
1 c. sugar
1 Tbsp. vanilla
3 Tbsp. flour

Preparation

Cook milk and flour in a small saucepan until begins
to boil and forms a thick sauce.
Allow to cool.
Cream margarine, shortening and sugar until smooth.
Add cooled sauce and vanilla and continue to beat until frosting is creamy.
Frost cake. Refrigerate until ready to serve.