Fluffy Cooked Icing

Directions

1. 1
   Mix together milk and flour and heat over low flame to boiling, stirring constantly.
2. 2
   Cool in refrigerator.
3. 3
   With mixer, combine butter, Crisco and sugar thoroughly.
4. 4
   Add vanilla and mix.
5. 5
   Add cooled milk mixture and beat until creamy and smooth (using electric mixer).
6. 6
   Frosts a 2 layer cake.