Chocolate Pie Filling - cooking recipe

Ingredients

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

Preparation

Mix sugar, cocoa and flour together.
Mix milk and eggs together.
Combine these 2 mixtures.
Cook in double boiler until thick.
Add butter as mixture starts to thicken.
Cool mixture. Add vanilla.