Julia Child Rules!!! "Gratin Jurassien" Named for the Juras region in Switzerland. A mainly Francophone region in the Jura mountains that border France.
Use more cheese if you want to, it won't hurt, especially on the top of the casserole.
This is filling and rich and goes wonderfully with beef, pork, lamb, pretty much anything. It also freezes and reheats nicely. You can also saute pearl onions in butter and put them in amongst the potatoes and cheese. An afterthought: try to get waxy potatoes, like reds or golds, to make sure that the slices don't turn to mush when absorbing the cream. (and that should be emmenthal cheese, but I can't get it to correct. Sorry.)