preheat the grill to medium heat
place the foil on your work surface
to the foil, add a burrito shell
next - the marshmallows
then, scatter chocolate pieces over the marshmallows
add broken up and crumbled graham crackers
roll the burrito up with the seal facing down
optional, but recommended: spray both sides of the burrito with butter-flavored cooking spray or brush with melted butter
seal the foil over the burrito making a foil tent
over indirect heat - place the foil packet
check on the burrito in about 5 minutes. The bottom should not be burnt but should be crisp. If it needs to crisp up a little bit more, leave it on the grill for an additional 2 minutes
remove from heat, slice into 2 halves and enjoy