1 c. milk
3 tbsp. flour
1/2 c. shortening
1/2 c. butter
1 c. sugar
1 tbsp. vanilla
Peanut butter

Add flour to milk in saucepan. Cook until thick over medium heat. Let mixture cool (may refrigerate). Add together shortening, sugar, butter, vanilla. Whip until white. Add peanut butter to taste. Add milk/flour mixture and beat until blended. Excellent on mayonnaise cake.