Mix the dry ingredients the night before then finish the batter in the morning to start your day with a freshly baked muffin.
Preheat oven to 375°F. Lightly coat six 2 1/2-inch muffin cups with nonstick cooking spray or line with paper bake cups and coat insides of paper cups with nonstick cooking spray; set aside. Place raisins and water in a small microwave-safe bowl. Cook on high power for 25 seconds. Let sit for 2 minutes to plump the raisins.
In a medium bowl, stir together flours, oats, brown sugar, baking powder, and cinnamon. Make a well in the center of the flour mixture and set aside. Combine applesauce, milk, egg whites, flax seed oil, and raisins. Add to flour mixture; stir just until incorporated. Don’t over mix. Spoon batter into prepared muffin cups filling each about three-fourths full. Bake for 20 to 22 minutes or until lightly browned and the muffin is firm in the middle. Cool in pan on a wire rack for 5 minutes. Remove from pan and serve warm.