Mom'S Chocolate Pie Filling - cooking recipe

Ingredients

7 Tbsp. cocoa
2 Tbsp. butter
2/3 c. flour
2 c. sugar
1/2 tsp. salt
5 c. milk
8 eggs, separated
1 1/2 tsp. vanilla
2 baked pie shells

Preparation

Mix cocoa, butter, flour, sugar, salt and egg yolks in heavy saucepan (save egg whites for meringue).
Add milk a little at a time.
Stir constantly over medium-high heat until thickened. Remove from heat and add vanilla.
Pour into two baked pie shells.