Arrange ice cream sandwiches in a single layer in a 13- x 9-inch pan. Pour ice cream topping over sandwiches. Spread whipped topping over ice cream topping. Sprinkle crushed candy bars over top. Cover and freeze at least 2 hours.
*For testing purpose only, we used Smucker's Milky Way Topping and Butterfinger candy bars.
Tip: Pound candy bars lightly with a rolling pin or meat mallet while still in their wrappers.