These Easy Cool Whip Cookies. Are the ultimate quick dessert. For busy days. Made with just three ingredients—cake mix, Cool Whip, and an egg—these cookies bake up light, and soft. And full of flavor. The secret lies in the Cool Whip. Which gives the cookies. A fluffy texture. And a sweet, melt-in-your-mouth finish. Whether you're craving something sweet. Or need an easy treat. For a party. This recipe is a go-to. Customize with your favorite cake mix flavors. And enjoy!