Ingredients:

4 tbsp. flour     
1 cup milk
8 tbsp. butter                
8 tbsp. shortening
1 cup sugar                   
1 tsp. vanilla


Procedure:

Cook milk and flour in saucepan until thick.  Remove from heat and let cool.

In mixing bowl, combine 4 remaining ingredients and beat for 4 minutes or until not grainy.

Add cooked flour mixture and beat until fluffy!