Line a 9 × 13 inch pan with foil. Or just serve it out of the pan! Lay half of the ice cream sandwiches (whole) in the bottom of the pan, trimming the last one to get it to fit (You may have to eat a small portion of an ice cream sandwich during assembly. I think you’ll be okay.). Top with half of the cool whip, half of the caramel sundae topping and half of the candy. Repeat these steps again, cover and freeze.