Chocolate Pie - cooking recipe

Ingredients

1 c. sugar
2 Tbsp. flour
2 Tbsp. cocoa
2 egg yolks
1 c. Pet milk
2 Tbsp. butter
1 tsp. vanilla

Preparation

Mix sugar, flour and cocoa.
Add egg yolks and milk.
Cook, stirring constantly, until thick and smooth.
Add butter and vanilla. Pour into baked pie shell.
Top with Cool Whip.