Preheat grill. Wash, dry, & core the Honeycrisp Apples. Place each apple on the center of an aluminum foil sheet.
In a small bowl, combine the cinnamon & sugar. Spoon 1 tbsp of the cinnamon/sugar mixture in the core of the each of the apples.
Wrap the apples in aluminum foil & grill over medium heat for 20-25 minutes or until apples are tender. Unwrap carefully to let steam escape. Serve warm.
Notes
You'll also need a few sheets of aluminum foil for this recipe.