Chocolate Cake Filling - cooking recipe

Ingredients

1 1/4 c. sugar
1/2 c. cocoa
1 egg
1 c. milk
1/4 to 1/2 stick butter
dash of salt
1 tsp. vanilla

Preparation

Mix all ingredients in a saucepan.
Cook slow, stirring constantly.
When thickens, add vanilla.
Cook before you bake cake, then it will be ready to put on baked cake.