First, combine the quick oats, 1 tablespoon of flour, 1/2 teaspoon of cinnamon, and 1/2 tablespoon of maple syrup in a bowl to create the crumble topping. Take one apple, cut it in half, and core it. Press the crumble topping onto the cut sides of the cored apple halves. Place the prepared apple halves in an air fryer and air fry for 10-15 minutes, until tender and the crumble is golden. Once cooked, transfer to a plate and top with yogurt (or ice cream) and an additional sprinkle of cinnamon before serving.
