Recipe video above. The ultimate potato bake, created by the French!!! Potato + cream + cheese with a hint of garlic and thyme = pure heaven. Based on Julia Child's Potato Dauphinoise recipe. This is THE perfect make ahead potato dish, the most luxurious of all potato casseroles, the better version of Scalloped Potatoes!Authenticity note: traditional Dauphinoise in France does not contain cheese. But I could never imagine making it without..... It makes it better. You know it does!