These muffins are wonderful, and I especially love making them in the Fall with spice-flavored cake mix. They're very moist, and since they require no oil and have the added pumpkin, are healthier than your average muffin, too! They're also very versatile, since a variety of cake mixes can be used. To fancy them up a bit, chopped walnuts or pecans or flavored mini chips can be added, or a powdered sugar glaze drizzled over the tops. You can also make them jumbo-sized--just bake them a little longer--about 20-24 minutes. One of the best recipes out there with such minimal ingredients!