Soft and Puffy Peanut Butter Coconut Oil Cookies

"There's no butter and no white sugar used in these soft, puffy, and very peanut buttery cookies. They're made with coconut oil, which smells stronger than it tastes, and although you can 'taste it', it's much milder and more subtle than coconut flakes. The peanut butter flavor really shines through. If you've never tried baking with coconut oil and replacing it one-for-one with butter in cookies, these cookies are a great place to start. A bit of cornstarch is the secret ingredient that helps the cookies bake up soft, light, slightly chewy, and very thick and puffy...."