A drop-in cooking device for installation into an opening in a fixture, including a housing configured to be mounted in the opening in the fixture, a heating element positioned in the housing, and a cover attachable to the housing adjacent the heating element, the cover comprising a thermally insulating material and having a collapsible portion, wherein the collapsible portion of the cover has a working configuration in which the cover has a first height and a storage configuration in which the cover has a second height, the second height being less than the first height.