In a medium bowl, blend wet ingredients. If your three bananas equal slightly less than 1 1/2 cups, make up the difference with applesauce.
In a large bowl, combine dry ingredients (flour, baking powder, etc.) and baking chips (+nuts if using.)
Slowly add wet ingredients to dry ingredients. Mix until just moistened.
While the batter rests, preheat the oven to 375 degrees. Line standard muffin tin with silicone or paper muffin liners. My silicone liners were sturdy enough that I could place them on a cookie sheet.
Pour batter into muffin liners.I suggest using a 3 tbsp scoop.
Bake the gluten-free banana cinnamon chip muffins for 23-28 minutes. I believe I baked mine closer to 25 minutes.
Allow to cool and then devour!