Found this in my aunt’s recipe box from 1958. She served these at every bridge club meeting.

For a lighter version, you can use half-and-half instead of heavy cream, but the cups may weep a bit more liquid and won’t be quite as rich or set; bake them on the longer end of the time range. If you need to make them ahead, bake until just tender, cool, then reheat loosely covered with foil at 350°F until hot and bubbling.

Reheated potato au gratin cups beside brunch eggs

For food safety, always refrigerate leftovers within 2 hours of baking, store them in a covered container, and