Marshmallow World is a popular Christmas song that was written in 1949 by Carl Sigman (lyrics) and Peter DeRose (music). Although it has been recorded by many artists, it was first a hit for Bing Crosby (backed by The Lee Gordon Singers and the Sonny Burke Orchestra). Crosby's version (recorded in 1950) peaked at number 24 on the pop singles chart in January 1951.