Look, scalloped potatoes and au gratin potatoes are both delicious. That’s not up for debate. What we’re here to talk about is the difference between au gratin and scalloped potatoes.

Mash or bake 'em or serve them scalloped or au gratin—indeed, it's hard to go wrong. Yet, au gratin and scalloped potatoes are sometimes used interchangeably—and are both delicious served alon ...