First, cover the bottom of the pan with ice cream sandwiches.

Next, spread a generous layer of soft chocolate ice cream over the ice cream sandwiches (filling in any gaps), then drizzle with chocolate syrup.

And add a layer of crushed cookies.

Then repeat with another layer of ice cream sandwiches.  More chocolate ice cream  and then cover it all with whipped topping.

Finally you’ll want to drizzle with yet more chocolate syrup and more crushed cookies and sprinkles (if desired).

Cover with plastic wrap (or the plastic lid that came with your pan if you got that kind) and freeze for at least 4 hours – overnight is best.