Preheat oven to 400 degrees. Prepare a Mini Muffin Tin by generously spraying it with Cooking Spray. Then use a fork to Mash Bananas in a small bowl then set it aside.
Add dry ingredients to a large mixing bowl; Flour, Baking Powder, Salt, 1/4 Cup White Sugar and 1/4 Cup Brown Sugar then mix until well combined.
Create a 'hole' in the middle of the mixture then pour mashed Bananas into the 'hole'. Set aside.
Beat Egg, Milk and Melted Butter in a medium size mixing bowl. Add the wet mixture to the large mixing bowl then fold together until batter is smooth.
Fill Muffin tins 3/4 full. Sprinkle Ground Cinnamon and Sugar over the batter filled muffin tin. Bake Banana Mini Muffins for 18-20 minutes at 400 degrees.
Place the pan on a cooling rack for 2-3 minutes before removing Muffins from the pan to cool individually on rack. Enjoy!