01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper for easy removal.
02 - Whisk mashed bananas, melted butter, and sugar in a large bowl until smooth.
03 - Add eggs, milk, and vanilla extract. Mix until thoroughly combined.
04 - In separate bowl, whisk together flour, baking soda, salt, and cinnamon.
05 - Gently fold dry ingredients into wet mixture until just combined. Do not overmix.
06 - Fold in nuts or chocolate chips if using.
07 - Pour batter into prepared loaf pan and smooth the top evenly.
08 - Bake for 50-60 minutes until toothpick inserted in center comes out clean or with few moist crumbs.
09 - Cool in pan for 10 minutes, then transfer to wire rack to cool completely before slicing.