Chocolate Mousse Pie

Directions

1. 1
   Cream together the butter and sugar until well blended.
2. 2
   Melt the chocolate. Let cool. Add to butter and sugar.
3. 3
   Add the eggs, one at a time, beating 5 minutes after each one.
4. 4
   Fold in the Cool Whip. Spoon into the pie shell.
5. 5
   Sprinkle with chopped nuts, if desired.
6. 6
   Top with Cool Whip as if it were meringue. Refrigerate 6 hours before serving.