Double Chocolate Zucchini Muffin Bread

Name: Double Chocolate Zucchini Muffin Bread
Ingredients: * 2 cup all purpose flour; * 3/4 c 1 cup packed brown sugar; * 2/3 cup cocoa powder; * 2 teaspoon baking powder; * 1 teaspoon baking soda; * 1/4 teaspoon salt; * 1 cup milk; * 2 large egg, beaten; * 1/2 cup butter, melted; * 2 teaspoon vanilla; * 2/3-3/4 cup chocolate chip; * 2 cup grated zucchini