Why Make This Recipe

Creamy Gruyere Scalloped Potatoes with caramelized onions are a delicious comfort food. This dish combines creamy, cheesy goodness with sweet, soft onions, making it perfect for family dinners or holiday gatherings. The layers of tender potatoes drenched in a rich sauce will satisfy everyone at the table. Plus, it’s a great way to elevate simple ingredients into something truly special.

How to Make Creamy Gruyere Scalloped Potatoes

Ingredients:

2 pounds Yukon Gold potatoes, thinly sliced
2 cups Gruyere cheese, shredded
2 medium yellow onions, thinly sliced
4 tablespoons unsalted butter, divided
3 garlic cloves, minced
3 tablespoons all-purpose flour
2 cups whole milk
1 cup heavy cream
1 teaspoon Dijon mustard
1 tablespoon fresh thyme, chopped (optional)
Salt and freshly ground black pepper to taste

Directions:

Preheat your oven to 375°F (190°C).
Caramelize the onions: Melt 2 tablespoons of butter in a large skillet over medium-low heat. Add the thinly sliced onions with a pinch of salt, stirring occasionally for about 30-35 minutes until they become soft, deeply golden, and sweet.
Prepare the Gruyere sauce: In a medium saucepan, melt the remaining 2 tablespoons of butter over medium heat. Stir in the minced garlic for about 30 seconds until fragrant but not brown. Whisk in the flour and cook for 1-2 minutes to make a roux, stirring constantly to avoid lumps.
Gradually whisk in the whole milk and heavy cream. Keep whisking until the sauce thickens and coats the back of a spoon (about 5-7 minutes). Remove from heat and stir in the shredded Gruyere cheese until melted and smooth. Add Dijon mustard, fresh thyme (if using), salt, and pepper to taste.
Slice the potatoes into thin, even rounds about 1/8 inch thick. Rinse the slices in cold water to remove excess starch and pat dry with a clean towel.
Butter the baking dish lightly. Start with a thin layer of potatoes, overlapping slightly. Spread a spoonful of caramelized onions evenly over the layer, then drizzle with some Gruyere sauce. Repeat layers until all ingredients are used, finishing with a generous layer of sauce and a sprinkle of extra cheese on top.
Bake uncovered for 50-60 minutes until the potatoes are tender and the top is golden brown and bubbling. If the top browns too fast, cover loosely with foil for the last 15 minutes.
Let it rest for 10 minutes before serving to allow the sauce to thicken and the slices to hold together.

How to Serve Creamy Gruyere Scalloped Potatoes

Serve these scalloped potatoes as a side dish with roasted meats, grilled chicken, or simply enjoy them on their own! They pair wonderfully with a fresh salad or steamed vegetables to balance out the richness.

How to Store Creamy Gruyere Scalloped Potatoes

If you have leftovers, let the dish cool completely. Then, store them in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave or warm them in the oven until heated through.

Tips to Make Creamy Gruyere Scalloped Potatoes

Use Yukon Gold potatoes for the best flavor and texture.
Don’t rush the caramelization of the onions; take your time to develop their sweetness.
You can add extra cheese on top for a more cheesy crust if desired.
To make it gluten-free, substitute the all-purpose flour with a gluten-free flour blend.

Variation

You can easily customize this recipe by adding your favorite herbs, such as rosemary or chives, or mixing in some cooked ham or bacon for added flavor. For a lighter version, use low-fat milk and cream.

FAQs

Q: Can I use another type of cheese?
A: Yes, you can use cheeses like cheddar or Monterey Jack for a different flavor, but Gruyere gives it a special creaminess that is hard to beat.

Q: How can I make this dish ahead of time?
A: You can prepare the potatoes and sauce a day in advance. Layer them in the baking dish, cover, and refrigerate. Bake when ready to serve, adding a bit more time if they’re cold from the fridge.

Q: Can I freeze scalloped potatoes?
A: Yes, you can freeze the unbaked dish. Just cover it tightly with plastic wrap and foil. When ready to bake, no need to thaw; just add some extra baking time to ensure they heat through.