3 egg yolks
1 c. sugar
3 tbsp. cocoa
3 tbsp. flour
2 c. sweet milk
1 tsp. vanilla
1/2 stick butter
1 cooked pie crust

TOPPING:

3 egg whites
1/4 c. sugar

Combine all ingredients in double boiler. Bring to boil, stirring constantly until thickened. Pour in cooled pie shell. Beat egg whites and sugar until stiff. Cover pie with meringue. Bake in oven until brown.