3 sq. baking chocolate
3 c. milk
1/2 tsp. salt
2 tbsp. butter
1 c. sugar
3 tbsp. flour
3 tsp. cornstarch
3 egg yolks
1 1/2 tsp. vanilla
1 (9") pie shell

Heat 2 cups milk; bring to a boil. Mix sugar, flour and cornstarch together. Pour remaining 1 cup of milk into flour mixture. Add egg yolks. Stir into chocolate mixture. Pour into shell and chill. Top with whipped cream or Cool Whip.