Abstract: A refrigerated case cover and method of use. The refrigerated case cover comprises a cover sheet made of insulating material having air cells sandwiched between an outer cover sheet and an inner cover sheet. Eyelets are disposed along the top and bottom edges of the cover. A cord is woven through the lower eyelets. At least one male tab is disposed on each cover sheet side. The cover is attached to a refrigerated case by attaching the upper eyelets to an upper case front lip by means of S hooks, attaching the cord to grille spokes disposed along a lower case front upper edge with S hooks, and attaching each cover sheet side to a respective case side with hook and loop material. An alternate embodiment refrigerated case cover has weights disposed along the cover sheet lower edge, to keep the refrigerated case cover sealed against a refrigerated case lower front, and to expedite installation and removal of the refrigerated case cover.