Prep: Grease two 8 x 4 inch pans or 6 mini loaf plans. Preheat oven to 325 degrees F.
Grate the zucchini using a box grater and set aside. Peel 1 medium apple, then slice and chop into small pieces. Set aside.
Batter: In a large bowl, mix together the flour, salt, baking powder, baking soda and cinnamon.
In a separate small bowl, beat the eggs, oil, vanilla extract, and sugars together.
Add the wet ingredients to the large bowl of dry ingredients and stir until combined.
Add the zucchini and apples to the bread batter, along with the nuts, and stir until well combined. Let the batter sit 5 minutes, then pour the batter into the prepared pans.
Bake: Place bread into the oven and bake for 40 to 60 minutes, or until tester inserted in the center comes out clean. My mini-loaf pans take about 35-40 minutes. Large sized loaves take about 55 minutes.
When done cooking, cool in the pan on rack a for 20 minutes. Remove bread from pan, and completely cool. Enjoy!