Preheat your oven to 350°F (175°C) and grease a 9x5 loaf pan or line it with parchment paper for easy removal.

In a medium bowl, whisk together the flour, baking soda, and salt. Set this dry mixture aside.

In a large bowl, add the mashed bananas, peanut butter, granulated sugar, brown sugar, buttermilk, vegetable oil, eggs, and vanilla extract, then whisk until the mixture is smooth and well combined.

Gradually add the dry ingredients into the wet mixture, stirring gently with a spatula or wooden spoon. Be careful not to overmix, fold until you no longer see streaks of flour.

Fold in the chocolate chips until evenly distributed throughout the batter.

Spoon the batter into the prepared loaf pan, filling the loaf pan ⅔ of the way full. Spread it out evenly with the back of a spoon. Sprinkle extra chocolate chips on top if you like.

Bake for 55–65 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs. Keep an eye on it, as baking times can vary slightly.

Allow the bread to cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely before slicing and serving. Enjoy!