1/2 c. butter, cut into 8 equal pats
3/4 c. sugar
1 (1 oz.) sq. unsweetened chocolate, melted and cooled
1 tsp. vanilla
2 lg. eggs
1 (8 inch) baked pastry shell
Whipped cream (for garnish)

In a small mixing bowl, cream butter and sugar. Beat in chocolate and vanilla until blended. Add eggs, one at a time, beating with an electric mixer at medium speed for 5 minutes after EACH addition. Turn into pastry shell. Chill. Garnish with whipped cream.