Chocolate Pie - cooking recipe

Ingredients

1 c. sugar
5 Tbsp. flour
4 Tbsp. cocoa
2 c. milk
2 egg yolks
1/2 c. butter
1 tsp. vanilla
1 (9-inch) crumb crust

Preparation

Mix in order:
sugar, flour, cocoa, milk, egg yolks and butter.
Cook in double boiler until thick.
Let cool slightly and add vanilla.
Pour in prepared crust.
Chill until set.