Preheat oven to 350 degrees F.
Grease a 9×5” loaf pan, set aside.
In a large bowl, whisk together melted butter, mashed bananas, eggs, brown sugar, and vanilla. Stir until combined.
Next, add flour, cocoa powder, baking soda, and salt
Sprinkle the 3/4 cup chocolate chips into the bowl and mix until combined.
Pour batter into the prepared loaf pan.
Bake in the oven for 50-60 minutes, or until the top is set and a toothpick inserted in the center comes out with a few moist crumbs.
Let the banana bread cool on a wire rack for 5 minutes in the loaf pan. Then transfer to a wire rack and cool for another 20 minutes.
