Peel the potatoes carefully and slice them very thin. Try to keep slices even for better cooking. Place them in cold water to stop browning. Drain them well before cooking. This step helps the texture stay soft and creamy later.

Add milk, cream, garlic, salt, and pepper in a saucepan. Heat slowly while stirring gently. Do not boil it too fast. The mixture should be warm and smooth. This creamy base gives rich flavor to your Jamie Oliver Dauphinoise Potatoes Recipe.

Grease your baking dish with butter. Start placing potato slices evenly. Add a little onion between layers. Pour some cream mixture over each layer. Repeat until all potatoes are used. This helps every bite become soft and full of flavor.

Preheat your oven to 180°C. Cover the dish with foil and bake for about 50 minutes. This helps potatoes cook through slowly. Remove foil near the end for a golden top. The smell will be rich and very inviting.

Sprinkle grated cheese on top of the potatoes. Bake again for 15 to 20 minutes. The top will become golden and crispy. Let it rest a few minutes before serving. This makes it easier to cut and serve neatly.