Preheat your oven to 350°F (175°C). Grease and flour a standard loaf pan or line it with parchment paper for easy removal.
In a large mixing bowl, combine the all-purpose flour, almond flour, peanut butter power, cornstarch, sugar, salt, cinnamon powder and baking powder. Mix well to ensure the dry ingredients are thoroughly combined.
In a separate bowl, whisk together the mashed bananas, applesauce, olive oil, and almond milk until the mixture is smooth and well incorporated.
Gradually add the wet ingredients to the dry ingredients. Stir gently until you have a smooth batter. If there are still dry ingredients remaining, you can add 1-2 Tbsp more almond milk.
Fold in the roasted peanuts, or other nuts of choice, if desired
Pour the batter into the prepared loaf pan, spreading it evenly.
Bake the banana bread in the preheated oven for about 50-60 minutes or until a toothpick inserted into the center comes out clean.
Once baked, remove the loaf from the oven and allow it to cool in the pan for approximately 10 minutes. Then, transfer it to a wire rack to cool completely.