Step 1: Prepare the Oven and Pan: Preheat oven to 350F (175C). Grease and flour a 9x5 inch loaf pan. This ensures the bread releases easily after baking. Alternatively, line the pan with parchment paper, leaving an overhang for easy removal.
Step 2: Combine Wet Ingredients: In a large mixing bowl, mash the ripe bananas until smooth. Add the eggs, milk, and vegetable oil. Whisk together until well combined. The wet ingredients should form a homogenous mixture.
Step 3: Incorporate Dry Ingredients: Gradually add the cake mix to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix, as this can result in a tough bread. A few lumps are acceptable.
Step 4: Add Optional Ingredients: If desired, gently fold in the chopped walnuts or chocolate chips. Distribute them evenly throughout the batter. This step allows for personalization based on taste preferences.
Step 5: Transfer to Pan: Pour the batter into the prepared loaf pan, spreading evenly. This ensures consistent baking throughout the loaf.
Step 6: Bake: Bake for 50-60 minutes, or until a wooden skewer inserted into the center comes out clean. The bread should be golden brown on top.
Step 7: Cool: Let the bread cool in the pan for 10 minutes before transferring it to a wire rack to cool completely. This prevents the bread from sticking and allows for easier slicing.
For a richer flavor, consider browning the butter before adding it to the batter. Substituting sour cream for milk will enhance the moistness. A sprinkle of cinnamon sugar on top before baking adds a delightful caramelized crust.