An expandable while-in-use electrical outlet cover assembly comprising a lid operatively coupled to a base, the lid comprising flexible clips each comprising a first end, a mid-position and a second end. The collapsible lid may be held in an expanded position by the first end of the flexible clips and collapsed to a collapsed position by applying force to the lid such that a box-like cap slides with respect to a support ring such that the cap seats at the mid-portion of the flexible clip. Particularly useful for rigid lids, like metal lids, the collapsible cover protects the outlet beneath the cover while an electrical cord is plugged in, but still collapses to a smaller profile.