Preheat your oven to 350°F (175°C) and line a 9x9-inch baking dish with parchment paper. This makes it easy to lift the bars out once they’re baked and helps prevent sticking.

In a large mixing bowl, combine all of the ingredients—mashed bananas, peanut butter, maple syrup, milk, gluten-free flour, brown sugar, baking powder, and baking soda. Stir everything together until the mixture is completely smooth and no lumps remain. Take a minute to scrape down the sides of the bowl to make sure everything is well incorporated.

Pour the batter into your prepared baking dish, spreading it out evenly with a spatula so the bars bake uniformly.

Bake in the preheated oven for 20 to 25 minutes, or until the edges are lightly golden and a toothpick inserted into the center comes out mostly clean with just a few moist crumbs.

Remove from the oven and immediately sprinkle chocolate chips over the warm bars. Let them sit for a few minutes so the chocolate chips melt slightly on top.

Allow the bars to cool in the pan for at least 15 minutes before slicing and serving. The bars will firm up as they cool, making them easier to cut. Enjoy!