Preheat the oven to 350 degrees and prepare a parchment lined baking sheet.
Place the powdered sugar in a shallow bowl - set aside.
In a large bowl, add the cake mix and the egg - mix well.
Add the cool whip to the bowl and mix well again.
Using a medium cookie scoop or spoon scoop about 2 tablespoons of the dough into the bowl of powdered sugar then form into a ball. (Don't try to form into a ball without the powdered sugar, it will be too sticky.)
Place the dough balls onto the parchment lined baking sheet, with plenty of room to spread out when cooking.
Bake for 8-10 minutes until the cookies start to look cracked and puffy. They will look unfinished at first - this is normal.
Allow to cool on the cookie sheet for a few minutes.
Notes
Make other flavors - If you’re not a fan of lemon, you can use any flavor of cake mix you prefer. There are countless flavor options when it comes to cake mixes.
Batter will me sticky - It will feel strange when first mixing the cookies - keep going, the batter will eventually form. Also, don’t try and use your hands to make the balls before they’ve been dropped in the powdered sugar - the batter will stick to everything.