Preheat oven to 350°F.
In a medium mixing bowl, add graham crackers, butter, and cinnamon. Stir well to combine.
Line Pyrex with tinfoil and spray a light coat of cooking spray all around (get the sides, those 'mallos are sticky!).
Dump graham cracker mixture into tin foil-lined Pyrex and press down evenly and firmly over the entire surface to create the crust.
Bake crust for 7 minutes.
Remove from oven. You can allow to cool or immediately apply your chocolatey candy of choice...just know that it will start to melt.
After you add your chocolates, apply a single layer of marshmallows. You can stand them up and make them look perfect or be messy like me because who the fuck has the patience for that?!
Grab your Jo Chef Kitchen Torch (LINKED BELOW!) and fire away!!! This will both torch the marshmallows and melt the chocolate.
Alternatively, place under broiler and watch like a hawk! This can go from zero to flaming homo in the blink of an eye!
Allow to cool completely before lifting foil from Pyrex, in one piece, to extract bars. Run a knife under very hot water and slice. Rinse and repeat. This will prevent the marshmallows (mostly) from sticking to the knife.
"I haven't had anything yet. So how can I have some more of nothing?"