PlaceGranny Smith Apple (7) in a large bowl. Add Granulated Sugar (1 cup) and Ground Cinnamon (1 teaspoon), toss to coat apples, and let sit for 1 hour.
Prepare grill or smoker for indirect cooking at 350 degrees F (180 degrees C).
Combine All-Purpose Flour (2 cup), Granulated Sugar (1 1/2 cup), Brown Sugar (1/2 cup), Baking Powder (2 teaspoon), Large Egg (2), and Salt (1 pinch) in a mixing bowl. Stir to combine into small crumbles.
Place apples in a dutch oven, top with crumble batter mixture, and drizzle with Butter (1/2 cup).
Cook in smoker or grill for 45 minutes to 1 hour, or until brown.
Serve immediately with Vanilla Ice Cream (to taste). Enjoy!