1/2 c. butter
3/4 c. sugar
2 sq. unsweetened chocolate
2 eggs
2 c. thawed Cool Whip
9 inch pie shell, pastry or graham cracker

Cream butter with sugar. Stir in the melted unsweetened chocolate. Add eggs, one at a time. Beat 5 minutes after each egg, at high speed. Fold in Cool Whip. Pour into cooled pie shell. Chill about 2 hours or freeze. Serve with or without Cool Whip on top of pie.