Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a mixing bowl, mash the ripe bananas until smooth.
Mix in the softened butter, brown sugar, egg, and vanilla extract until well combined.
In another bowl, whisk together the flour and baking soda; gradually mix into the wet ingredients without overmixing.
Gently fold in the chocolate chips.
Scoop tablespoon-sized portions onto the prepared baking sheet.
Bake for 10-12 minutes until edges are lightly golden. Cool before serving.