1 baked pie crust
¾ cup butter
1 cup sugar
3 squares unsweetened chocolate, melted
1 ½ tsp vanilla
3 eggs

Cream butter. Gradually add sugar. Cream well. Blend in melted & cooled chocolate & vanilla. Add eggs, one at a time, beating 5 min after each addition, on medium speed of electric beater. Turn into cooled pie shell. Chill 2 hours. Top with whipped cream.