Ingredients
Cream ahead:
1/4 C. butter
1/2 C. shortening
1/4 C. sugar
1/2 tsp. salt
1/2 tsp. vanilla
Boil and cool completely:
3 T. flour
3/4 C. milk
Preparation
Add creamed mixture to cooled flour and milk mixture. Beat with mixer at high speed for 5 minutes. Frost cake
