In a mixing bowl combine egg whites and whisk in maple syrup, apple sauce, coconut oil, vanilla, cinnamon, nutmeg, baking soda, baking powder, and salt until well-combined.
Mix in carrot purée and stir. Once combined mix in oat bran and flour (mix until combined but don’t over mix ⚠️)
Mix in raisins and nuts and pour batter into pregreased muffins tins/ cups.
Bake for 25-30 minutes at 350 degrees F or until toothpick comes out clean.
While muffins are baking, make the icing. Mix all ingredients in a mixing bowl with a hand beater until consistency is creamy.
Once muffins are completely cool, place a dollop of icing on top and sprinkle with cinnamon.