1/2 c. butter
3/4 c. sugar
1 sq. melted chocolate or packet (melted)
2 eggs
2 c. thawed Cool Whip
1 sm. prepared pie crust

Cream butter with sugar, stir in chocolate. Add eggs one at a time, beating well after each addition (5 minutes) on high speed. Fold in Cool Whip. Pour into pie shell and chill until firm.