Twinkie Cake - cooking recipe

Ingredients

1 box yellow cake mix (can substitute chocolate cake mix)
5 Tbsp. flour
1 c. milk
1 c. sugar
1/2 tsp. salt
1/2 c. shortening
1/2 c. butter or oleo
1 Tbsp. vanilla

Preparation

Bake cake and cut lengthwise.
Boil milk and flour until stiff, stirring constantly.
Cool; add sugar, salt, shortening, oleo and vanilla.
Add milk mixture and beat until fluffy.
Put filling between cake layers.
Cover cake and store in refrigerator one day.