Can I use russet potatoes instead of Yukon Gold?

You can, but I don’t recommend it. Russets release more starch and tend to collapse into the sauce, which turns clean layers into a soft mash. Yukon Golds hold their shape and still go creamy, which is the whole point of scalloped potatoes.

Why is my sauce watery after baking?

Because it never thickened properly on the stove. The sauce needs to boil briefly before it hits the oven. If it goes in thin, it will stay thin—no amount of baking fixes that.

Do I have to peel the potatoes?

No, but there’s a tradeoff. Unpeeled Yukon Gold skins are thin and edible, but they do interrupt the silky texture slightly. If you want classic, clean layers, peel them.

Can I assemble this ahead of time?

Yes. Assemble the full dish, cover it tightly, and refrigerate up to 24 hours. When baking from cold, add 10–15 extra minutes and keep it covered longer so the center heats evenly.

How do I know when the center is done?

Press gently in the middle with a spoon or knife. It should slide in with no resistance, and the dish should feel set, not loose or sloshy. If the top is brown but the center feels firm, it’s not ready.

Do I really need a mandoline?

I strongly recommend one. Even slices cook evenly; uneven slices don’t. If you slice by hand, aim for about ⅛-inch thickness and accept that the margins for error get much smaller.

Why do my scalloped potatoes fall apart when I cut them?

You didn’t let them rest long enough. Right out of the oven, the sauce is still loose. Give it at least 20 minutes so it can tighten and hold the layers together.

Scalloped Potatoes That Finally Work Every Single Time

Description

These Golden Creamy Scalloped Potatoes are rich, cheesy, and perfectly baked with tender Yukon Gold potatoes in a garlic-thyme cream sauce. Finished until bubbly and golden, this comforting side dish is ideal for holidays or everyday dinners.

Ingredients

Scale

5 pounds Yukon Gold potatoes, thinly sliced
2 tablespoons unsalted butter
2 cloves garlic, minced
1 tablespoon all-purpose flour
1 cup heavy cream or half-and-half
½ cup grated Parmesan cheese, plus more for topping
1 teaspoon fresh thyme
½ teaspoon kosher salt
½ teaspoon black pepper

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Instructions

Preheat the oven to 400°F and grease a ceramic baking dish.
Peel and thinly slice the potatoes using a mandoline or sharp knife.
Melt the butter in a large pot over medium heat, then add the garlic and cook until fragrant.
Stir in the flour and cook briefly to form a roux.
Gradually whisk in the cream and cook until slightly thickened.
Stir in the Parmesan cheese, thyme, salt, and pepper until smooth.
Add the sliced potatoes and gently toss to coat evenly in the sauce.
Arrange the potatoes upright in the baking dish and pour any remaining sauce over the top.
Sprinkle additional Parmesan cheese on top.
Cover with foil and bake for 30 minutes, then uncover and bake another 30 minutes until golden and bubbling.
Let rest for 10 minutes before serving.

Notes

Use Yukon Gold potatoes for the creamiest texture.
Russet potatoes can be used for a softer, fluffier result.
Substitute half-and-half to lighten the dish slightly.
Add Gruyère or cheddar cheese for a richer flavor.
Assemble up to 24 hours ahead and refrigerate before baking.

Nutrition

Serving Size: 1 serving
Calories: 290
Sugar: 3g
Sodium: 320mg
Fat: 14g
Saturated Fat: 8g
Unsaturated Fat: 5g
Trans Fat: 0g
Carbohydrates: 32g
Fiber: 3g
Protein: 8g
Cholesterol: 38mg