1 baked, cooled 9 inch pie shell - cookie or reg. crust
1/2 c. butter
3/4 c. sugar
2 sqs. melted unsweetened chocolate, cooled
2 eggs
4 oz. Cool Whip

Cream butter with sugar. Stir in melted chocolate. Add eggs, one at a time, beat 5 minutes at high speed. Fold in Cool Whip. Pour into pie shell and chill until firm - about 2 hours. Can be made ahead and frozen.