Follow the steps in order for the best result.
Begin by sifting together the whole wheat flour, all-purpose flour, baking powder, and salt in a large mixing bowl. This ensures a light and even texture for your banana bread.
In a separate bowl, mash the ripe bananas until smooth. Incorporate the light olive oil and eggs into the mashed bananas, mixing until well combined. These wet ingredients provide moisture and richness to the bread.
Add the brown sugar and Splenda blend to the flour mixture, stirring to distribute evenly. Gradually pour the wet ingredients into the dry ingredients, mixing until just combined. Be careful not to overmix, as this can result in a tough bread.
If desired, gently fold in the chopped walnuts. The walnuts add a delightful crunch and nutty flavor to the banana bread.
Transfer the batter to a greased loaf tin. For an extra touch of sweetness and visual appeal, sprinkle a little brown sugar over the top of the batter.
Bake in a preheated oven at 170 degrees Celsius (338 degrees Fahrenheit) for approximately 40 minutes, or until a toothpick inserted into the center comes out clean. Let the banana bread cool in the loaf tin for a few minutes before transferring it to a wire rack to cool completely. Enjoy!