Preheat the oven to 350 degrees Fahrenheit. Spray your loaf pan with cooking spray.
In a large bowl, combine dry ingredients, from the flour to the cinnamon. In a separate bowl, whisk together the eggs, oil, and milk.
Add the egg mixture to the dry ingredients, followed by the zucchini and walnuts. Mix well to combine.
Pour the batter into the prepared loaf pan. Bake in the oven for 45 minutes - 1 hr or until done. The bread is ready when a toothpick inserted in the center comes out clean. Let it sit in the pan for 5 minutes, remove and cool completely on a wire rack.