1. Build a hot fire in a charcoal grill or set a gas grill to medium-high. 2. Thread 2 marshmallows onto each skewer; hold skewers over grill 4 inches above heat. 3. Grill, turning as needed, until marshmallows are puffed and charred in spots, 4-6 min. 4. Place 1 marshmallow on top of 1 graham cracker and top with half a chocolate bar. Continue layering crackers, marshmallows, and chocolate until you have made a tower; if chocolate isn't melted, wrap s'more in aluminum foil and grill 1-2 min. until gooey.
A summer classic! Messy and fun for the kiddos.