01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan with butter or cooking spray, or line with parchment paper.
02 - In a large mixing bowl, whisk mashed bananas and melted butter until completely smooth and integrated.
03 - Stir in granulated sugar, brown sugar, eggs, and vanilla extract. Beat mixture until uniform and creamy.
04 - In a separate medium bowl, sift together flour, baking soda, and salt until well blended.
05 - Gradually fold dry ingredients into wet mixture using a spatula. Mix only until flour disappears — overmixing creates tough bread.
06 - Gently fold in chocolate chips, reserving a tablespoon for topping.
07 - Pour batter into prepared loaf pan and smooth top. Scatter reserved chocolate chips across surface.
08 - Bake for 50-60 minutes. Check doneness by inserting toothpick in center — it should emerge with moist crumbs, not wet batter.
09 - Let bread rest in pan for 10 minutes, then remove to wire rack. Cool completely before slicing for clean cuts.