Zucchini Bread With Oats

Name: Zucchini Bread With Oats
Ingredients: Non-stick vegetable oil spray; 1 cup walnuts (optional); 3 large eggs; 1 cup vegetable oil; ½ cup (packed) light brown sugar; 1 tablespoon vanilla extract; 3 cups all-purpose flour; 1½ teaspoons kosher salt; 1 teaspoon ground cinnamon; 1 teaspoon baking soda; ½ teaspoon baking powder; ¼ teaspoon freshly grated nutmeg; 3½ cups coarsely grated zucchini (from about 1 lb. zucchini); 1¼ cups old-fashioned rolled oats, divided; 3 tablespoons raw sugar