Chocolate Pie - cooking recipe

Ingredients

6 Tbsp. flour
1 1/4 c. sugar
1/4 c. cocoa
2 Tbsp. butter
2 c. water
3 egg yolks (reserve whites for topping)
1 tsp. vanilla
1 baked pie shell

Preparation

Mix the first 4 ingredients together, then add the rest.
Cook on top of stove until it gets thick.
Pour into baked pie shell.