We found this recipe on allrecipes recently and it instantly shot up to the top of our favorite desserts list. One of the nice things about this dessert (besides its really good flavor) is that you can make it several days ahead of time.
2 cups chocolate syrup
3/4 cups peanut butter
19 ice cream sandwiches
1 12oz container cool whip
1 cup salted peanuts, chopped
Heat syrup & peanut butter in a small saucepan, stirring until the peanut butter is melted.
In a 9x13" pan, layer half the sandwiches, half of the cool whip, half of the chocolate mixture, and half of the nuts. Repeat layers. Freeze for about 1 hour. Cut into squares to serve. Makes about 15 servings.