Preheat oven to 350°F. Spray a 9-inch square baking pan with cooking spray and line with parchment paper. Set aside.
In a medium bowl, whisk together all purpose flour, baking soda, baking powder, cinnamon, nutmeg and cloves. Set aside.
2 cups all-purpose flour, 1 teaspoon baking soda, 1 teaspoon baking powder, 1 tablespoon ground cinnamon, ¼ teaspoon ground nutmeg, ¼ teaspoon ground cloves
In a large bowl, whisk together sugars, eggs, applesauce, milk and vanilla extract.
⅔ cup brown sugar, ⅔ cup granulated sugar, 2 large eggs, ⅔ cup unsweetened applesauce, ¼ cup whole milk, 1 teaspoon vanilla extract
Stir in the flour mixture just until combined.
Stir in zucchini, coconut and toasted walnuts.
2 cups grated zucchini, 1 cups shredded sweetened coconut, ¾ cup toasted walnuts
Pour into prepared baking dish and bake for 25 to 28 minutes or until an inserted toothpick comes out clean.
Let cool completely before icing.