Line up 12 crackers on a serving platter, good side down.
Melt the marshmallows in the microwave for about 1 to 2 minutes, checking often. Spread them evenly over graham crackers.
Now warm up the hot fudge sauce slightly. You want it warm but not hot or your ice cream will slide right off the sandwich. Set aside.
Cut the ice cream into squares. I buy the rectangular box, open it up and slice like I would with a watermelon. Seriously, works like a charm. Pay attention to size so the ice cream fits on the ice cream sandwich. Slide the ice cream on top of the marshmallow layer.
Quickly top with sauce, and then top each one with a graham cracker.
Serve immediately. It helps to have solid ice cream to start off with so you have time to work. Or get someone to help. This recipe requires quick work.
Serve with a big old s'mores loving smile!