1 c. sugar
1/4 c. cocoa
1/4 c. cornstarch
3 c. milk
3 egg yolks
1 1/4 tsp. vanilla
1 pastry shell, baked
1 c. whipping cream
6 tbsp. powdered sugar
1 (9 inch) shell

Combine sugar, cocoa, cornstarch in heavy saucepan. Combine milk and egg yolks. Gradually stir into sugar mixture, cook over medium heat, stirring constantly until mixture thickens and boils. (Do not overcook.) Boil 1 minute, stirring constantly. Remove from heat, stir in vanilla. Immediately pour into baked pastry shell. Cover filling with waxed paper. Let cool 30 minutes, then chill until firm. Top with whipped cream.