Preheat your oven to 350 degrees. Spray or grease a square baking pan, line with parchment paper and set aside.
Using a food processor, pulse together the rolled oats until ground. They do not have to be ground fine; it's ok to keep some texture. Pour into a mixing bowl. Combine the pulsed rolled oats with the baking powder, baking soda, salt, cinnamon, and chia seeds.
Using a separate mixing bowl, combine the apple sauce, maple syrup, vanilla and mashed bananas.
Slowly pour the dry ingredients into the wet and mix until combined. Fold in the chocolate chips.
Pour the mixture into your prepared pan and top with some more chocolate chips if desired. Bake for about 28 to 30 minutes. Allow to cool before cutting into squares. Enjoy!