Prepare the pans: Grease two 8 x 4-inch loaf pans or six mini loaf pans. Preheat the oven to 325°F (163°C).

Prep the fruits: Grate the zucchini using a box grater and set aside. Peel one medium apple, then dice it into small pieces and set aside.

Mix dry ingredients: In a large mixing bowl, combine the flour, cinnamon, salt, baking powder, and baking soda.

Mix wet ingredients: In a separate smaller bowl, beat together the eggs, vegetable oil (or applesauce), vanilla extract, white sugar, and brown sugar until well blended.

Combine wet and dry ingredients: Add the wet ingredients to the bowl of dry ingredients and stir until just combined.

Add zucchini, apples, and nuts: Gently fold the grated zucchini, diced apple, and chopped walnuts into the batter. Let the batter sit for 5 minutes.

Pour into pans: Divide the batter evenly between the prepared loaf pans.

Bake: Place the pans in the preheated oven and bake:

Mini loaves: Bake for 35-40 minutes.

Full-sized loaves: Bake for about 55 minutes.

Insert a toothpick or tester into the center of the bread. If it comes out clean, the bread is done.

Cool: Allow the bread to cool in the pan on a wire rack for 20 minutes. Then, remove the bread from the pan and let it cool completely before slicing. Enjoy!