- Preheat oven to 350°F.
- Layer potatoes, apples, and cheese in a large buttered rectangular baking dish and season with salt and black pepper.
- Pour the cream over all and sprinkle with pancetta, chives, a touch of nutmeg and the tiny butter cubes.
- Cover with foil and bake until potatoes are tender (about 90 minutes), then remove foil and bake 15 minutes more.
- Let sit 15 minutes or so before serving to set up.
About 1hr 45 mins total time