Step 1: Prepare the Baking Pan: Preheat oven to 350F (175C). Grease and flour a 9x5 inch loaf pan. Alternatively, line the pan with parchment paper, leaving an overhang for easy removal.
Step 2: Combine Wet Ingredients: In a large bowl, mash the ripe bananas until smooth. Add the vegetable oil and eggs. Mix well until all ingredients are fully incorporated.
Step 3: Incorporate Cake Mix: Gradually add the yellow cake mix to the wet ingredients. Mix until just combined. Be careful not to overmix; a few lumps are acceptable.
Step 4: Add Nuts and Cinnamon: Gently fold in the chopped nuts and ground cinnamon (if using). Ensure the nuts are evenly distributed throughout the batter.
Step 5: Transfer to Pan: Pour the batter into the prepared loaf pan, spreading it evenly. Optionally, sprinkle additional chopped nuts on top for added texture and visual appeal.
Step 6: Bake the Bread: Bake in the preheated oven for 45-55 minutes, or until a wooden skewer inserted into the center comes out clean.
Step 7: Cool and Slice: Let the bread cool in the pan for 10 minutes before transferring it to a wire rack to cool completely. Slice and serve.
Optional Tips:
- For a richer flavor, consider using brown butter instead of vegetable oil.
- Chocolate chips can be added for a chocolate banana nut bread variation.
- If the top of the bread starts to brown too quickly, tent it with foil during the last 15 minutes of baking.