Preheat oven to 350°F. Line a cookie sheet with parchment paper or a silicone baking mat.
In a large bowl, stir the cake mix, Cool Whip, and egg with a sturdy spatula until no dry streaks remain. The dough will be very sticky. 1 box lemon cake mix, 2 cups frozen whipped topping, 1 large egg
Place the powdered sugar in a small bowl. Use a 2-tablespoon cookie scoop (sprayed with cooking spray) to drop dough into the sugar. Spoon sugar over the top, then roll to coat. Place 2 inches apart on the prepared sheet. 1/2 cup powdered sugar
Bake 8 to 10 minutes, until the tops are crackled, the edges are set, and the centers are puffed and no longer shiny. Pull them out before they get brown.
Cool on the pan for 3 minutes, then move to a cooling rack. Makes about 20 cookies (2 1/2" in diameter).
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Notes
1 batch makes about 20 cookies.
Because the cake mix has so much flavor, there's no need for extra vanilla extract.
The calories shown are based on the recipe making 20 cookies, with 1 serving being 1 cookie. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.*