Mom'S Chocolate Pie - cooking recipe

Ingredients

2 c. sugar
4 c. milk
1 stick butter or margarine
2 (9-inch) baked pie shells
5 heaping Tbsp. cocoa
6 egg yolks
1 tsp. vanilla
whipped cream

Preparation

Mix dry ingredients together.
Add eggs, butter and vanilla. Cook over medium heat until thick, stirring often.
Pour into pie shells.
Top with whipped cream.