Preheat oven to 350 F. Grease muffin tin or spray paper liners to prevent sticking and set aside. In a large bowl, whisk flour, oats, baking soda, baking powder, salt and spices together until well combined. Add applesauce, sugars and maple, then stir until almost combined. add apples, stirring until just combined. Spoon into muffin cups 3/4 full. Sprinkle additional oats and brown sugar over top if desired. Bake 18-25 minutes, or until a toothpick inserted in the center comes out clean.