Company-Worthy Creamy Potato Gratin (Golden & Bubbly)
This is the kind of side dish that clears the pan at potlucks and church dinners: paper-thin potatoes layered with garlicky cream and a duo of cheeses, baked until irresistibly bronzed.
The technique is streamlined yet reliable—no flour roux or fussy steps—just hot cream, even layers, and proper resting time for picture-perfect slices.
It embodies the tinsuf philosophy of smart, high-reward cooking: minimal effort, maximum applause.
Let the gratin rest so every slice holds its creamy layers.
Recipe Details
Author: tinsuf
Cuisine: French
Category: Side Dish
Keywords: potato gratin, scalloped potatoes, dauphinoise, creamy potatoes, holiday side
Prep Time: 25 minutes
Cook Time: 1 hour 10 minutes
Total Time: 1 hour 35 minutes
Yield: 12 servings
3 pounds (1.4 kg) Yukon Gold potatoes, peeled and sliced 1/8 inch (3 mm) thick
2 cups (480 ml) heavy cream
1 cup (240 ml) whole milk
3 tablespoons unsalted butter, plus more for the dish
3 cloves garlic, minced (or 1 1/2 teaspoons garlic powder)
1 1/2 teaspoons kosher salt, divided
1/2 teaspoon freshly ground black pepper
1/4 teaspoon ground nutmeg (optional)
1 1/2 cups (150 g) grated Gruyère or Swiss cheese, divided
1/2 cup (50 g) grated Parmesan, divided
2 tablespoons chopped fresh parsley or chives, for finishing
Potato choice: Yukon Gold holds shape yet turns silky. Russets work too, but rinse and pat dry after slicing to reduce excess starchiness.
Step-By-Step Instructions
Prep and preheat: Heat oven to 375°F (190°C). Butter a 9×13-inch (23×33 cm) baking dish.
Heat the cream: In a saucepan, combine cream, milk, butter, garlic, 1 teaspoon salt, pepper, and nutmeg. Heat until steaming and butter melts; do not boil.
Layer: Arrange one third of potatoes in the dish, overlapping slightly. Sprinkle with one third of Gruyère and a tablespoon of Parmesan plus a pinch of the remaining 1/2 teaspoon salt. Repeat two more times.
Pour and press: Pour hot cream mixture evenly over layers. Press gently to submerge all slices and remove air pockets.
Bake covered: Cover tightly with foil and bake 40 minutes until potatoes are nearly tender.
Brown the top: Remove foil, add remaining cheeses, and bake 20–30 minutes more until deep golden and bubbling at the edges.
Rest and serve: Let stand 10–15 minutes to set. Finish with herbs and slice into squares.
Troubleshooting & Consistency Tips
Watery gratin: Ensure the cream mixture is hot when poured; cold liquid prolongs cooking and can weep. Bake until the edges bubble vigorously.
Top browning too fast: Tent loosely with foil during the last 10 minutes or move to a lower rack.
Potatoes still firm: Slice thinner (3 mm) and keep covered longer before the final browning stage.
Greasy pool on top: Avoid boiling the cream and measure cheese accurately; too much fat can separate.
No mandoline: A sharp knife works; keep slices as uniform as possible for even cooking.
