1 c. milk
5 tbsp. all purpose flour
1 c. sugar
1/2 tsp. salt
1/2 c. shortening
1/2 c. butter
1 tsp. vanilla

In a sauce pan, mix milk and flour. Cook, stirring constantly, until mixture comes to a boil and is thickened. Cool. Beat until fluffy. Add remaining ingredietns, beating well after each addition.