[header] How to make gratin dauphinoise without cream [title] Preheat the oven. [step] To ensure that the oven is hot enough to bake the gratin, you must preheat it. Set the temperature to 425 ° f (220 ° c), and allow it to fully heat. 
[title] Rub the garlic clove over a shallow baking dish. [step] For the gratin, you'll need a fairly shallow baking dish.