Double Chocolate Banana Bread

Bahan-bahan (16 porsi)

• 3 bananas (very ripe )
• 1/3 cup unsalted butter (melted and cooled slightly)
• 2 tablespoons cooking oil
• 1 large egg
• 2 teaspoons pure vanilla extract
• 3/4 cup light brown sugar (packed)
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1 cup all-purpose flouR (plain flour)
• 1/2 cup unsweetened cocoa powder (or dutch processed for a richer taste)
• 1 cup semi sweet chocolate chips (divided)