- 1/2 cup butter, softened
- 1/2 cup shortening
- 2/3 cup confectioners' sugar
- 1/2 cup milk
- 5 tablespoons all-purpose flour
- 1 teaspoon vanilla extract
- Combine butter or margarine, shortening, confectioners' sugar, flour, vanilla, and milk in a mixing bowl. Whip all ingredients until fluffy.