3 tbsp. flour
1 c. milk
1 c. sugar
3/4 - 1 c. butter
1 tsp. vanilla

Cook 3 tablespoons flour and 1 cup milk over low heat until thick. Stir hard constantly. Set aside to cool. Beat together 1 cup sugar and 3/4 - 1 cup butter until light and fluffy. Add 1 teaspoon vanilla and mix. Add cooked flour mixture until well blended. Should be consistency of whipped cream.