Zucchini Muffins

Name: Zucchini Muffins
Ingredients: 3 cups grated fresh zucchini; 2/3 cup melted unsalted butter; 1 1/3 cup sugar; 2 eggs, beaten; 2 teaspoons vanilla; 2 teaspoons baking soda; Pinch salt; 3 cups all-purpose flour; 2 teaspoons cinnamon; 1/2 teaspoon nutmeg; 1 cup walnuts (optional); 1 cup raisins or dried cranberries (optional)