Crush cookies in zip style bag, with rolling pin, or in food processor.
Make pudding as directed on package using 3 1/2 cups milk; let stand 5 minutes. Stir in 3 cups of the whipped topping and 1/2 of the crushed cookies. Spoon into 13x9 dish. Sprinkle with remaining crushed cookies. Refrigerate 1 hour.
Decorate with candy pumpkins,candy corn, milanos and spoonfuls of whipped topping for ghosts (pipe in chocolate eyes)