9" graham ******* crust 3/4 c. butter 1 c. sugar 2 (1 oz.) squares unsweetened chocolate, melted & cooled 3 eggs 1 tbsp. vanilla Whipped cream Using Mixer: Cream butter. Add sugar slowly and whip until smooth. Blend in chocolate. Add eggs, one at a time, whipping 5 minutes after each egg is added (very important). Add vanilla. Pour into pie shell and chill several hours. Top with whipped cream and serve.