1. Prepare the Crust:

1. Preheat oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. In a large bowl, cream together the butter, brown sugar, and granulated sugar until light and fluffy.
3. Add the mashed banana and vanilla extract, mixing until well combined.
4. In a separate bowl, whisk together the flour, baking soda, and salt.
5. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
6. Fold in the chocolate chips.
7. Drop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart.
8. Bake for 10-12 minutes or until the edges are lightly golden.
9. Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.