Gratin Dauphinois (French Potato Gratin)

Method

1. Infuse the cream by warming cream, garlic, nutmeg, salt, and pepper in a saucepan over medium heat. Don't boil — just warm until fragrant.

   Salt early and throughout the cooking process. Salt added at the beginning penetrates the food; salt added at the end sits on the surface. Both are important, but the foundation matters most.

   Salt early and throughout the cooking process. Salt added at the beginning penetrates the food; salt added at the end sits on the surface. Both are important, but the foundation matters most.

2. Layer the potatoes in a buttered baking dish, overlapping the slices like shingles. Pour a little cream over each layer. Repeat for 3-4 layers, ending with cream on top. The cream should just reach the top layer.

3. Bake covered at 350°F for 45 minutes. The potatoes should be tender when pierced with a knife.

   Position the rack in the center of the oven for even heat distribution. The top rack runs hotter (closer to the heating element) and the bottom rack is cooler.

   Position the rack in the center of the oven for even heat distribution. The top rack runs hotter (closer to the heating element) and the bottom rack is cooler.

4. Uncover and bake 15-20 more minutes until the top is golden brown and bubbling. Add Gruyère in the last 10 minutes if using.

   Position the rack in the center of the oven for even heat distribution. The top rack runs hotter (closer to the heating element) and the bottom rack is cooler.

   Position the rack in the center of the oven for even heat distribution. The top rack runs hotter (closer to the heating element) and the bottom rack is cooler.

5. Rest 10 minutes before cutting. Serve as a side with roasted meats — the rich, creamy potatoes are the perfect foil for simply prepared proteins.

   Resting is not optional. When meat cooks, the muscle fibers contract and push moisture toward the center. Resting allows the fibers to relax and the juices to redistribute evenly throughout the cut.

   Resting is not optional. When meat cooks, the muscle fibers contract and push moisture toward the center. Resting allows the fibers to relax and the juices to redistribute evenly throughout the cut.

Equipment

• 9x13 baking dish
• Mandoline slicer
• Saucepan Recommended: Cuisinart Chef's Classic 3-Quart Saucepan

Chef Notes

• The most important thing: Slice the potatoes uniformly thin — 1/8 inch. A mandoline is the only reliable way to get consistent thickness. Uneven slices cook unevenly — thick ones stay raw while thin ones dissolve.
• Don't rinse the sliced potatoes. The surface starch is what thickens the cream into a silky sauce as it bakes. Rinsing removes the starch and you get watery gratin.
• Traditional Dauphinois has NO cheese. The cream, garlic, and nutmeg are the only flavors. Adding Gruyère makes it a gratin savoyard — delicious but different.
• Bake covered for the first 45 minutes (to cook the potatoes through), then uncovered for the last 15-20 minutes (to brown the top).
• Rest 10 minutes before serving. The cream sets slightly and the gratin holds together when you cut it.

Common Substitutions

Ingredient	Substitution	Notes
Heavy cream	Half-and-half	Lighter — slightly less rich
Yukon Gold	Russet	Starchier — dissolves more, thicker sauce
Gruyère	Comté or Emmental	Both melt beautifully
Mandoline	Very sharp knife	Must be extremely thin and uniform

What You're Practicing

Gratin Dauphinois teaches you cream-baked cookery — the technique of using starchy vegetables to thicken cream into a sauce during baking. The same principle drives scalloped potatoes, cauliflower gratin, and fennel gratin. Visit Techniques for more.