Preheat your oven to 350°F (175°C). This ensures that the bread bakes evenly.

Grease a 9x5 inch loaf pan with non-stick spray or line it with parchment paper for easy removal.

In a large mixing bowl, mash the ripe bananas with a fork until smooth. Ripe bananas add natural sweetness and moisture.

Add the eggs, Greek yogurt, honey, and vanilla extract to the mashed bananas. Whisk together until fully combined.

In a separate bowl, combine the whole wheat flour, protein powder, baking soda, baking powder, and salt. Stir well to ensure even distribution of the leavening agents.

Gradually add the dry ingredients to the wet mixture, folding gently with a spatula until just combined. Be careful not to overmix, as this can result in a dense bread.

If desired, fold in the chopped walnuts and dark chocolate chips for added texture and flavor.

Pour the batter into the prepared loaf pan, smoothing the top with a spatula.

Bake in the preheated oven for 50-60 minutes, or until a toothpick inserted into the center comes out clean. This ensures the bread is fully cooked.

Once baked, remove from the oven and let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely.