Moist Chocolate Banana Bread - Cakes by MK

Ingredients

• 1 cup dark chocolate chunks (I like to cut up a bar of 50% dark chocolate. Semi-sweet chocolate chips/drops will work too. )
• 1½ cups very ripe bananas (mashed, about 3 large bananas)
• 1¼ cups flour (plain, all purpose )
• 2 tbsp cornstarch
• 1 tsp baking powder
• ¾ tsp baking soda
• ½ tsp salt
• ⅓ cup cocoa powder (unsweetened, dutch process preferred)
• ¼ cup unsalted butter (room temperature)
• ¾ cup white granulated sugar
• ¼ cup unflavoured vegetable oil (I use canola oil)
• 1 large egg (room temperature)
• 1½ tsps vanilla extract/essence