Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper or a silicone baking mat.

Mash the banana in a medium mixing bowl until smooth. Use a fork or potato masher for best results.

Add sugar and melted butter to the mashed banana. Mix until well combined. If using vanilla extract, stir it in at this point.

In a separate bowl, whisk together flour, baking soda, salt, and cinnamon (if using).

Combine the dry ingredients with the wet mixture. Stir until just incorporated—avoid overmixing.

Fold in walnuts or chocolate chips if desired. This adds extra texture and richness.

Scoop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake for 10–12 minutes, or until the edges are golden and the centers are set.

Cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

Enjoy warm or store in an airtight container once completely cooled.