Preheat Oven: Preheat your oven to 350°F (190°C) and line baking trays with parchment paper or lightly grease them.
Mix Dry Ingredients: In a bowl, whisk together flour, baking soda, baking powder, and salt until evenly combined.
Cream Butter & Sugar: In a separate large bowl, beat softened butter, brown sugar, and granulated sugar until light and fluffy.
Add Wet Ingredients: Mix in mashed bananas, egg, and vanilla extract until smooth and fully combined.
Combine Mixtures: Gradually add the dry ingredients into the wet mixture and mix just until combined. Do not overmix.
Add Chocolate Chips: Fold in the chocolate chips evenly throughout the dough.
Shape Cookies: Scoop tablespoon-sized portions of dough and place them onto the prepared baking tray, leaving space between each cookie.
Bake Cookies: Bake for 10–12 minutes or until the edges are lightly golden and centers remain soft.
Cool Cookies: Let the cookies cool on the tray for 5 minutes, then transfer them to a cooling rack to cool completely.
