This easy Potato Gratin recipe features thinly sliced Yukon Gold potatoes layered with Gruyère cheese, heavy cream, and a hint of nutmeg, then baked until golden and bubbly. With a crispy panko topping and rich, creamy texture, this classic French-style potato gratin makes the perfect side dish for holiday dinners, roasted chicken, beef, or steak. Simple ingredients and straightforward preparation make it ideal for weeknight meals or special occasions. A comforting baked potato casserole that delivers creamy layers and golden crust in every bite.

Table of Contents

Ingredients

2 pounds Yukon Gold potatoes (or other waxy potatoes), peeled
1 tablespoon unsalted butter, softened
Salt and freshly cracked black pepper, to taste
8 ounces Gruyère cheese (or another good melting cheese), coarsely grated
2 cups heavy cream
⅛ teaspoon freshly grated nutmeg
½ cup panko breadcrumbs
Finely chopped fresh chives or thyme (optional, for garnish)

Instructions

Preheat the oven to 425°F (220°C).
Slice the potatoes very thinly, about ⅛ inch thick or less, using a mandoline slicer or a sharp knife for even slices.
Grease the bottom and sides of an 8×8-inch baking dish (or similar size) with the softened butter.
Arrange a single layer of potato slices in the dish. Lightly season with salt and pepper, then sprinkle with a thin layer of grated cheese.
Continue layering potatoes, seasoning, and cheese until all ingredients are used, finishing with a layer of cheese on top.
Slowly pour the heavy cream evenly over the layered potatoes. Gently press down with your hands or a spatula to remove any trapped air pockets and ensure the cream seeps between the layers.
Grate fresh nutmeg over the top, then sprinkle evenly with panko breadcrumbs.
Cover the dish tightly with foil and bake for 30 minutes.
Reduce the oven temperature to 350°F (175°C) and continue baking for another 30 minutes.
Remove the foil and bake for an additional 20 minutes, or until the top is golden brown and a knife slides easily through the center without resistance. If the top browns too quickly, loosely cover with foil and continue baking until tender.
Let the gratin rest for at least 10 minutes before slicing. Garnish with fresh chives or thyme, if desired, and serve warm.

Tips

Use a mandoline for evenly thin slices to ensure consistent cooking.
Choose waxy potatoes like Yukon Gold for a creamy texture that holds its shape.
Allow the gratin to rest before serving so the layers set properly.
Pressing the potatoes gently after adding cream helps eliminate air gaps and ensures even cooking.

Variations and Substitutions

Swap Gruyère for cheddar, fontina, or comté for a different flavor profile.
Add thinly sliced garlic between layers for extra depth.
Mix in caramelized onions for a richer taste.
Substitute half-and-half for a slightly lighter version.
Add cooked bacon or pancetta for a savory twist.

FAQs

Can I make potato gratin ahead of time?
Yes. Assemble and bake it partially, then reheat before serving. It can also be fully baked and gently reheated in the oven.

How do I know when it’s done?
A knife should slide easily through the center without resistance, and the top should be golden brown.

Can I freeze potato gratin?
It’s best enjoyed fresh, but leftovers can be frozen. The texture may slightly change after reheating.

What’s the difference between potato gratin and scalloped potatoes?
Potato gratin typically includes cheese, while traditional scalloped potatoes may not always contain cheese.

Serving Suggestions

Serve alongside roasted chicken or beef.
Pair with grilled steak or pork chops.
Add to a holiday dinner menu.
Serve with a fresh green salad to balance richness.
Enjoy as a comforting vegetarian main dish.

Why You’ll Love This Recipe

Creamy layers with a golden, crispy topping
Simple ingredients with rich flavor
Perfect for holidays or family dinners
Make-ahead friendly
Classic comfort food with minimal effort