01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan or line with parchment paper.
02 - Whisk together flour, baking soda, and salt in a medium bowl. Set aside.
03 - Whisk melted butter and sugar in a large bowl until smooth. Beat in eggs one at a time, then add vanilla and mashed bananas, mixing well.
04 - Gently fold dry ingredients into wet mixture until just combined. Do not overmix.
05 - Fold in chocolate chips and nuts if using.
06 - Pour batter into prepared loaf pan and smooth the top.
07 - Bake for 50-60 minutes until a toothpick inserted in center comes out with a few moist crumbs.
08 - Cool in pan for 10 minutes, then transfer to wire rack to cool completely before slicing.