Preheat the oven to 400 degrees F. Spray a regular muffin tin with non-stick cooking spray or line with muffin liners.

In a large bowl, beat the egg, brown sugar, yogurt, milk, applesauce, honey, and vanilla and mix until well combined.

Mash the bananas until no chunks remain. Add to mixture.

In a separate bowl combine the dry ingredients: flour, baking soda, baking powder, salt, cinnamon, and oats.

Add the flour mixture to the wet ingredients and stir just until combined. (Don't over-mix!)

Spoon the mixture evenly into the muffin tins, filling each cup all the way to the top.

Bake at 400 degrees F for about 5 minutes and then reduce heat to 350 degrees and cook for another 12-14 minutes or until a toothpick inserted in the center comes out clean.