Preheat the Oven: Start by preheating your oven to 350°F (175°C). Line a baking sheet with parchment paper for easy cleanup.
Mix the Wet Ingredients: In a mixing bowl, combine the mashed bananas and brown sugar, stirring until well blended. Add the melted butter, egg, and vanilla extract, mixing until smooth.
Combine Dry Ingredients: In another bowl, whisk together the flour, baking soda, and salt.
Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Be careful not to overmix! Fold in the chocolate chips.
Scoop the Dough: Using a cookie scoop or spoon, drop rounded tablespoons of dough onto the prepared baking sheet, spacing them about 2 inches apart.
Bake: Bake in the preheated oven for 10-12 minutes, or until the edges are golden brown.
Cool: Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.