What is pomme dauphinoise?

Pomme dauphinoise, literally "potatoes dauphinoise", is a classic French gratin of sliced potatoes baked in cream with garlic, and sometimes cheese. Originating in the Dauphiné region in southeastern France, this hearty and flavorful dish takes its name from the former French province, which was traditionally governed by the heir to the French throne, known as the Dauphin. It is believed to have originated in the 18th century and has since become a beloved dish throughout France and beyond.