1/2 c. butter
3/4 c. sugar
2 squares unsweetened chocolate, melted
1 tsp. vanilla
2 eggs
1 baked pastry shell

Cream butter and sugar. Add melted chocolate and vanilla. Add 1 egg and beat 5 minutes at medium speed. Add second egg. Beat another 5 minutes. Pour into a baked pie shell and refrigerate. When ready to serve, top with whipped cream.