Spray the back of a metal spoon with cooking spray, then use it to press the crumb mixture into the pan.
It’s a snap to spread the fudge sauce over the ice cream. Just spoon the sauce into a resealable plastic food-storage bag, cut off a small tip from a corner and squeeze.
This special dessert keeps well in the freezer for up to two weeks. Make the dessert, freeze until firm, then cover with foil to store.