Preheat your oven to 350°F (175°C) and line a 9x9 inch baking pan with parchment paper.

In a large mixing bowl, combine the mashed bananas and nut butter. Mix until smooth and creamy.

Add in vanilla extract and maple syrup, stirring until everything is well incorporated.

Introduce the rolled oats, cinnamon, and a pinch of salt to the banana mixture. Gently fold in until evenly distributed.

Fold in the chocolate chips, mixing until they are evenly spread.

Spoon the mixture into your prepared baking pan and smooth the top into an even layer.

Bake for 18-20 minutes, or until the edges are golden brown and the center feels set to the touch.

Allow the bars to cool completely in the pan for about 30 minutes before cutting.