Prepare the Oven and Pans

• Preheat the oven to 350°F. Grease two 9-by-5-inch loaf pans with nonstick cooking spray and set aside.

Mix the Dry Ingredients

• Reserve 1 tablespoon of flour and set aside. In a large bowl, whisk together the remaining flour, cocoa powder, baking soda, and kosher salt. Set aside.

Mash and Combine Wet Ingredients

• In another large bowl, mash the ripe bananas with a fork until smooth. Add the melted butter and vegetable oil, stirring to combine. Stir in the brown sugar, eggs, and vanilla bean paste until the mixture is smooth.

Combine the Batter

Combine Wet and Dry Ingredients

• Gently stir the dry ingredient mixture into the wet ingredients. Mix until just combined; avoid overmixing.

Prepare and Add Chocolate Chips

• In a medium bowl, toss 2 cups of chocolate chips with the reserved 1 tablespoon of flour. Fold these floured chocolate chips into the batter, mixing gently.

Bake the Bread

Divide and Bake

• Pour the batter evenly into the prepared loaf pans. Bake for 50-65 minutes, checking for doneness at 50 minutes. The bread is done when a toothpick inserted in the center comes out mostly clean (melted chocolate on the toothpick is fine, but there should be no gooey batter). Adjust baking time as needed, as ovens vary.

Finishing Touches

Cool and Top with Chocolate

• Remove the pans from the oven and place on a wire cooling rack. Immediately sprinkle the remaining 1 cup of chocolate chips over the tops of the loaves. Let them melt, then spread the melted chocolate evenly over the tops.

Cool Completely

• Allow the bread to cool in the pans for 20 minutes. Run a knife around the edges of the bread, carefully remove from the pans, and transfer to the wire rack. Let cool completely before slicing and serving.

Storage Tips

Counter Storage

• Wrap the bread in plastic wrap and store it on the counter for up to 4 days.

Freezing Instructions

• Cool the bread completely, then wrap in plastic wrap and aluminum foil. Freeze for up to 1 month. Defrost fully before slicing and serving.