Remove the grates in your Grill and open the flame broiler. Start your Grill on smoke with the lid open until a fire is established in the burn pot (3-7 minutes). Preheat to HIGH.
Place marshmallow fluff in the microwave until warm, about 10 seconds. Pierce strawberries with skewers and dip into warmed marshmallow fluff. Roast over the opened flame broiler until golden brown. Serve immediately.