Better-For-You Chocolate Cupcakes

"Serve these secret-ingredient cupcakes to guests, and we bet they won’t be able to taste the difference. Start with Betty’s devil’s food cake mix and swap out oil with spinach purée, it’s that simple. You might be thinking, spinach, in cupcakes? And we can understand your concerns, but the rich and chocolatey cake mix masks any unwanted spinach flavor. So you can soak up the benefits from the leafy, nutrient-dense veggie, without compromising the delicious taste of your dessert!..."