Chocolate Sauce - cooking recipe

Ingredients

1 1/2 c. sugar
1 heaping Tbsp. flour
3 Tbsp. cocoa
2 c. milk
1/4 stick butter
1 tsp. vanilla

Preparation

Mix sugar, flour and cocoa.
Slowly add milk to avoid lumps. Add butter and vanilla.
Cook; stir constantly until mixture boils and begins to thicken.
(It will thicken some as it cools.)
Serve over unfrosted yellow sheet cake.