01 - Preheat the oven to 350°F and line an 8x8-inch baking pan with parchment paper.
02 - In a large mixing bowl, combine the mashed bananas, peanut butter, eggs, maple syrup, and vanilla extract. Mix until smooth.
03 - Add the cinnamon, salt, and baking soda. Stir well to incorporate.
04 - Fold in the chocolate chips, if using.
05 - Pour the batter into the prepared pan and spread evenly.
06 - Bake for 20-22 minutes, or until the center is set and a toothpick inserted comes out clean.
07 - Let cool completely in the pan before slicing into bars.