REPORT: Amid the Mast Bros Controversy, The Keebler Elves Allegedly Do Not Bake Cookies in an Elf Tree Will Williamsburg December 22, 2015 Lifestyle TLDR. The Keebler Elves allegedly use industrial factories to bake delicious Keebler cookies, not in an elf tree. They have come to respond completely refuting all of the allegations—"which are unfounded and...