Chocolate Pie - cooking recipe

Ingredients

4 Tbsp. brown sugar
3 egg yolks
3 c. milk
1 large box chocolate pie filling (not instant)
1 Tbsp. butter
1 tsp. vanilla

Preparation

Cook the first 4 ingredients.
Remove from the heat and add the butter and vanilla.
Cool and pour into pie shell.
Serve with Cool Whip.