Preheat your oven to 350°F (175°C) and grease a loaf pan with butter. Sprinkle a little sugar on the bottom of the pan for an extra touch of sweetness.
In a mixing bowl, whisk together the flour, white sugar, baking soda, and salt. Ensure the dry ingredients are well combined and set the bowl aside.
In another bowl, mash the ripe bananas using a fork until they form a smooth consistency.
Add the softened butter to the mashed bananas and gently mix them together, ensuring the butter is evenly incorporated.
Stir in the vanilla extract and the beaten egg into the banana and butter mixture. Mix until the ingredients are fully combined, resulting in a smooth texture.
In a separate small bowl, toss the chocolate chips in a little bit of flour. This will prevent the chips from sinking to the bottom of the batter during baking.
Gradually combine the wet and dry ingredients by adding the mashed banana mixture to the bowl of dry ingredients. Carefully fold the mixture together until just combined. Be cautious not to overmix, as this can result in a denser texture.
Gently fold in the flour-coated chocolate chips. If desired, add a handful of walnuts for an extra nutty flavor and delightful crunch.
Pour the batter into the greased loaf pan, ensuring it is evenly distributed.
Place the pan in the preheated oven and bake for approximately 45-50 minutes. To test if the bread is done, insert a toothpick into the center. If it comes out clean or with a few moist crumbs clinging to it, the bread is ready.
Once baked, remove the banana bread from the oven and let it cool in the pan for 10 minutes. Afterward, transfer it to a wire rack to cool completely before slicing.