Preheat oven to 325 degrees F.
Before starting, grind your old fashioned oats in a food processor to turn them into a flour like texture. You could also buy oat flour if preferred.
In a mixing bowl, combine sugars and butter and mix until well combined (mixture will be dry). Add in eggs and applesauce and mix until well combined. Add in bananas, Greek yogurt and vanilla, mix until well combined.
In a separate bowl, combine oats, baking soda and cinnamon. Stir into wet ingredients. Add in chocolate chips and stir until just combined.
Scoop into muffin pans sprayed with non stick cooking spray.
Bake for 20 minutes. Remove from oven and let cool completely, then remove from muffin pan. Store covered in fridge or freezer. Enjoy!