Favorite Frosting - cooking recipe

Ingredients

3 Tbsp. flour
1/2 c. milk
dash of salt
1 stick margarine
1/2 c. sugar
1/2 tsp. vanilla

Preparation

Mix the first 3 ingredients in a saucepan on medium heat until they cook to a thick solid mass (like paste).
Cool until cold. Add the margarine, sugar and vanilla.
Beat well until very creamy and fluffy.