Zucchini Bread Waffles

Name: Zucchini Bread Waffles
Ingredients: 2 cups grated zucchini, squeezed with paper towels; 2 carrots, peeled and grated; 3 cups all-purpose flour; 4 teaspoons baking powder; 1 teaspoon ground cinnamon; 1/2 teaspoon grated nutmeg; 1/2 teaspoon kosher salt; 2 1/2 cups buttermilk, at room temperature; 4 tablespoons butter, melted; 1/4 cup granulated sugar; 1 tablespoon vanilla extract; 3 large eggs, at room temperature; Nonstick cooking spray, for spraying the waffle iron; 8 ounces cream cheese, softened; 1 cup powdered sugar; 1 tablespoon maple syrup; About 1/2 cup milk, at room temperature