The addition of lots of zucchini and some whole wheat flour make these Double Chocolate Zucchini Muffins a little healthier than standard bakery muffins.
Unless your muffin pans are meant to make very large muffins, you will probably have enough batter to make 15 muffins. If you have a second muffin pan, use it to make the extra muffins, otherwise refrigerate the leftover batter and make the remaining muffins as soon as you remove your first batch of muffins from the pan.