Preheat oven to 350F and grease and line with parchment paper a 9x9 baking dish.

In a large bowl, mash bananas. Stir in peanut butter, maple syrup, egg and vanilla until well combined.

In a small bowl, add oats, cinnamon, baking powder, and salt.

Add dry ingredients to wet and stir until combined. Add in chocolate chips and mix.

Pour into greased baking dish and bake for 28-30 minutes or until toothpick inserted comes out clean.

Let cool before slightly before cutting into.