Start by spreading a thin layer of whipped topping on your platter or dish.
Add your first layer of sandwiches.
Spread sandwiches with a layer of whipped topping.
Add another layer of ice cream sandwiches. Repeat until all sandwiches have been used.
Frost the entire cake with a thin layer of whipped topping. Let freeze 15 minutes. Just long enough for the whipped topping to harden before adding the final layer.
Use remaining whipped topping to get a nice even coat all around the cake and spread until smooth.
Spoon hot fudge into a plastic bag. Cut the tip off of the bag and drizzle the cake with hot fudge sauce (NOT heated). Freeze at least 1-2 hours before serving.
Video
Notes
This cake is just as delicious on day 2. The ice cream sandwiches soften slightly and are perfect!