1 c. sugar
1/3 c. flour or 3 tbsp. cornstarch
2 (1 oz.) sq. unsweetened chocolate
2 c. milk
3 slightly beaten egg yolks
2 tbsp. butter
1 tsp. vanilla
1 (9-inch) baked pastry shell

In saucepan, combine sugar and flour; gradually stir in milk and chocolate. Cook and stir over medium heat until bubbly. Cook and stir 2 minutes. Remove from heat. Stir small amount hot mixture into yolks. Immediately return to hot mixture. Cook 2 minutes, stirring constantly. Remove from heat. Add butter and vanilla. Pour into cooked baked pastry shell. Spread meringue atop pie and bake at 350°F for 12 to 15 minutes; cool.