Lemon Cake Mix Cookies 1-8 oz container cool whip, 2 eggs, 1-18.25 oz lemon cake mix, 1/3 cup powdered sugar Preheat oven to 350. Lightly grease cookie sheets. Beat together the whipped topping and eggs. Add lemon cake mix and continue to mix. Dough will be thick. Drop by tspfuls into a bowl of powdered sugar and roll to coat. Place cookies on baking sheets. Bake at 350 for 8 minutes.