Patty'S Cooked Frosting - cooking recipe

Ingredients

3/4 c. milk
3 Tbsp. flour
1 tsp. vanilla
1/2 c. margarine, softened
1/2 c. shortening (butter flavor is best)
1 c. sugar

Preparation

Combine milk, flour and vanilla in a saucepan over medium heat, whisking constantly, until thick.
This mixture must completely cool!
Add remaining ingredients.
Whip until sugar dissolves and frosting is fluffy.
Spread on your favorite cake.