Preheat the oven to 350°F (175°C). Line a large baking tray with parchment paper and set aside.

In a large mixing bowl, mash the bananas with a fork until smooth.

Stir in the rolled oats and peanut butter. If the peanut butter is too thick, microwave it for 15-20 seconds to make it easier to mix.

Fold in the chocolate chips, if using, until evenly distributed.

Use a cookie scoop or your hands to form the mixture into 12 balls. Place them on the prepared baking tray.

Gently press each ball into a cookie shape.

Bake in the preheated oven for 10-12 minutes, or until the cookies are set and lightly golden on the edges.

Allow the cookies to cool on the baking tray for 5 minutes before transferring them to a wire rack to cool completely.

Once cooled, you can drizzle them with melted chocolate if desired. Enjoy!