In this Southern twist on a fireside classic, flour tortillas replace traditional graham crackers; be sure to buy the large size and portion out to guests after grilling.
Heat a grill or grill pan. Place 4 tortillas on a clean work surface; scatter each with chocolate pieces and marshmallows. Place the 4 remaining tortillas on top, press them together to seal. Grill until tortillas are browned and chocolate and marshmallows are melted and gooey, about 30 seconds per side. Cut into wedges, and serve.
The quesadillas can be assembled up to a day ahead and wrapped tightly in plastic wrap or aluminum foil until you are ready to grill them.