How to Use a Leftover Butter Wrapper After you’ve used an entire stick of butter, use the butter wrapper for greasing a pan. By Krista Matias October/November 2014 Tweet Don’t throw away your used butter wrappers! One resourceful reader thought of a handy way to stretch its usefulness. Photo by Fotolia/darkbird Content Tools Print Email Save the wrappers that sticks of butter come in and use them for greasing pans. This is a convenient and tidy way to get as much use from your butter wrappers as possible.Krista Matias Minneapolis, Minnesota Tweet Related Content Share your thoughts. Share susan 9/22/2014 8:17:47 AM Thay are slap good for locking in juices when roasting meat and adding extra on cooked vegetables.