Preheat oven to 350 degrees F and spray non-stick 12 muffin tin with cooking spray. Set aside.In a large mixing bowl, add eggs and whisk for 15 seconds. Add applesauce, maple syrup, vanilla, cinnamon, nutmeg, baking powder, baking soda, salt and whisk well to combine. Add carrots and stir a few times. Add oat bran or oats and whole wheat flour; gently mix until combined. Do not over mix. Stir in raisins and nuts.Distribute batter evenly between 12 openings of a tin (I used regular ice cream scoop) and bake for 25 minutes or until a toothpick inserted in the centre comes out clean. Let muffins cool for a few minutes and transfer to a cooling rack to cool off completely.