Let’s assemble this incredibly simple frozen cake:

1. Prepare Pan and First Layer:

• Have your 9×13 inch pan ready. No need to grease it.
• Arrange a single, tight layer of ice cream sandwiches covering the entire bottom of the pan. Cut sandwiches as needed to fill any small gaps completely. (This usually takes 9-12 sandwiches).

2. Add First Fudge and Cool Whip Layers:

• Gently warm the hot fudge sauce slightly if it’s very thick, just until spreadable but not hot. Pour or spoon about 1/3 of the hot fudge sauce evenly over the first layer of ice cream sandwiches. Spread carefully with an offset spatula.
• Spread half of the thawed Cool Whip evenly over the hot fudge layer.

3. Add Second Sandwich, Fudge, and Cool Whip Layers:

• Arrange another complete layer of ice cream sandwiches on top of the Cool Whip.
• Spread another 1/3 of the hot fudge sauce over the second layer of sandwiches.
• Spread the remaining half of the Cool Whip evenly over the fudge layer.

4. Add Oreo and Final Fudge Topping:

• Sprinkle the crushed Oreos evenly over the top layer of Cool Whip.
• Drizzle the remaining 1/3 of the hot fudge sauce decoratively over the crushed Oreos.

5. Freeze Until Firm:

• Cover the baking dish tightly with plastic wrap or a lid.
• Place the assembled cake in the freezer for at least 4 hours, or preferably overnight, until completely firm and set.

6. Serve:

• Remove the cake from the freezer a few minutes before serving to make slicing slightly easier. Cut into squares or rectangles using a large, sharp knife (running the knife under hot water can help). Serve immediately.

Minimal effort for a fantastic frozen dessert!