Heat a non-stick skillet over medium heat and lightly coat with cooking spray or butter.
Place one flour tortilla in the skillet.
Spread the chocolate chips or chocolate spread evenly over the tortilla.
Sprinkle the mini marshmallows evenly over the chocolate.
Sprinkle the graham cracker crumbs on top of the marshmallows.
Cover with the second flour tortilla.
Cook until the bottom tortilla is golden brown and the chocolate and marshmallows are melted, about 3-4 minutes.
Carefully flip the quesadilla using a spatula, and cook the other side until golden brown, about 2-3 minutes.
Remove from the skillet and let it cool for a minute before cutting into wedges.
Pack in a lunchbox with a side of fresh fruit or yogurt for balance.