Preheat oven to 375.
In a large mixing bowl (the one that you're going be using for your stand mixer) combine the applesauce and maple syrup.
You will then add your eggs in, one at a time.
In a small bowl mashed your bananas and add the milk and vanilla.
While your mixer is going add the dry ingredients and the banana mixture a little bit at a time (alternating).
Fold in berries.
Prepare your muffin tins (I used spray) and pour batter.
Bake 30 - 35 minutes or until fork comes out clean (I used frozen blueberries which made my batter cold, this could be why it took so long - please check your muffins at 25 minutes first).