Pink Lemonade Butter Cookies. This recipe is PERFECTION! My mom loves pink lemonade, so I gave this recipe a shot. Now she's declared these as her favorite cookie! (: I improvised because I couldn't find the pink lemonade cake mix, so I got lemon cake mix. Also added a 1/4 cup of flour because I had trouble finding mixes with 18.25 oz., everything was 15 or 16 oz.