This is a variation on the classic Dauphinoise recipe. I use a deeper dish than the usual 2 to 3-inch gratin dish, I skip the cheese, and add very thinly sliced onions and carrots to deepen the flavor without overwhelming the potato, which is the star of this tasty dish. Can sit in warm oven for a while and people *always* ask for seconds. Serve small portions; it's rich. Excellent with leeks or shallots in place of onion (just don't let the potato be overshadowed). Good accompaniment to roasts or roasted vegetables (for a vegetarian meal) and a divine leftover. —veronique
Slice potatoes 1/8-1/4-inch thick. Peeling is optional (I leave peel on. Adds fiber, texture, and flavor).
Slice onion and carrot as thinly as possible and coarsely mince any herbs to be used.
Select a baking dish that will provide about a 4-inch high stack of the potatoes, onion, and carrots. Rub dish with butter.
Each layer should consist of potato, carrot, onion, salt and pepper, fresh herbs and should be topped with several+ dots of butter. Overlap potato slices slightly and add moderate amount of carrot and onion slices (the potatoes are the star in this dish). Aim for at least three layers ending with dots of butter on top for browning.