Preheat oven to 350°F (175°C) and grease a 9x5 inch loaf pan.

In a large bowl, mash the bananas until smooth.

Stir the melted butter into the mashed bananas until combined.

Add the sugar, beaten egg, and vanilla extract, mixing well.

Sprinkle the baking soda and salt over the wet mixture and stir to incorporate.

Gently fold in the flour until just combined, ensuring no large dry streaks remain.

Fold in the chocolate chips.

Pour the batter into the prepared loaf pan and smooth the surface.

Bake for 60 minutes or until a toothpick inserted into the center comes out clean.

Allow the bread to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.