1 stick (1/2 c.) butter
3/4 c. sugar
1 1/2 sq. unsweetened chocolate
2 eggs
1 tsp. vanilla
1 baked pie shell, cooled
Whipped cream or topping

Cream butter and sugar in bowl. Melt chocolate over boiling water and stir into creamed mixture. Add vanilla. Add 1 egg and beat 5 minutes with mixer. Add other egg and beat 5 minutes. Pour into pie shell; top with cream. Chill.