Preheat oven 350 F. Grease or spray a muffin tin or paper liners if using. 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 blueberries, stirring until just combined. Spoon into muffin cups 3/4 full. Sprinkle additional oats and brown sugar on top if desired. Bake 18 to 25 minutes, or until a tooth pick inserted in the center comes out clean.