Preheat your oven to 350°F (175°C). Grease or line a baking sheet or loaf pan with parchment paper.
In a mixing bowl, mash the ripe bananas using a fork or potato masher until smooth.
Add the melted unsalted butter to the mashed bananas and mix well.
Incorporate the sugar into the banana-butter mixture and stir until combined.
Add the beaten egg and vanilla extract, mixing until the ingredients are well incorporated.
In a separate bowl, whisk together the all-purpose flour, baking soda, and salt.
Gradually add the dry ingredients into the wet ingredients, stirring until just combined. Be careful not to overmix; a few lumps are okay.
Gently fold in the chocolate chips into the batter until they are evenly distributed.
Pour the batter into the prepared loaf pan, spreading it evenly.
Bake for 50-60 minutes or until a toothpick inserted into the center comes out clean.
Once baked, remove from the oven and allow the banana chocolate chip bread to cool on a wire rack for a few minutes before serving.