Get a medium-hot fire going - we recommend using a charcoal grill for this.
Spray your foil plate with nonstick spray, then place your brie round on the pan, nicer/flatter side down. Spray with pan spray.
Toss a handful of wood chips on the coals, then place the pan of brie on the grill gates. Cover the grill, cook for 5 minutes.
Carefully remove the pan from the heat. Spray the top with more pan spray, then carefully flip the brie in the pan.
Using a sharp knife, score the top of the brie round. Aim to cut JUST through the rind, maybe slightly deeper - but that’s it.
Once you’ve scored the top, place a piece of rosemary on top of the cheese.
Throw another handful of wood chips over the goals, put the pan back on the grill, cover, and cook for 5 more minutes.
Remove from the grill, and carefully transfer the baked brie round to your serving plate.
Drizzle with maple syrup, and serve immediately, with your choice of crackers.