Can you assemble scalloped potatoes ahead of time?

Yes, you can assemble scalloped potatoes ahead of time. Prepare the dish completely, but do not bake. Cover tightly and refrigerate for up to 24 hours. Add about 15 minutes to the baking time if baking directly from the refrigerator.

How do you keep scalloped potatoes from getting watery?

To prevent watery scalloped potatoes, avoid rinsing the sliced potatoes (the starch helps thicken the sauce), use a heavy cream or a mixture of cream and milk rather than just milk, and ensure the potatoes are cooked through thoroughly to release excess moisture during baking.

What is the best potato to use for scalloped potatoes?

The best potatoes for scalloped potatoes are Yukon Gold or Russet potatoes. Yukon Golds offer a creamy texture and hold their shape well, while Russets provide a starchier texture that helps thicken the sauce.

Can you freeze scalloped potatoes after they are cooked?

While you *can* freeze cooked scalloped potatoes, the texture may change and become slightly grainy due to the dairy content. For best results, cool completely, wrap tightly in freezer-safe packaging, and consume within 1-2 months. Thaw in the refrigerator overnight before reheating.

How long do scalloped potatoes last in the fridge?

Cooked scalloped potatoes will last for 3-4 days in the refrigerator. Store them in an airtight container to maintain freshness.

What is the difference between au gratin and scalloped potatoes?

The main difference between au gratin and scalloped potatoes is the addition of cheese in au gratin potatoes. Scalloped potatoes typically consist of sliced potatoes baked in a creamy sauce, while au gratin potatoes include cheese (often Gruyere or cheddar) in the sauce and/or sprinkled on top.

Make Ahead Scalloped Potatoes with Rich Baked Flavor 2026

Make Ahead Scalloped Potatoes

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This is a classic, creamy comfort food dish designed for convenience. Assemble it ahead of time for a stress-free side that bakes up golden and bubbly when you need it.

Author: Harmony
Prep Time: 30min
Cook Time: 75min
Total Time: 1h 45min
Yield: 8 servings 1x
Category: dinner
Method: baking
Cuisine: American

Ingredients

Scale

3 pounds russet potatoes, peeled and thinly sliced (about 1/8-inch thick)
4 tablespoons unsalted butter
1 medium yellow onion, finely diced
3 cloves garlic, minced
1/4 cup all-purpose flour
2 cups whole milk
1 cup heavy cream
2 teaspoons Dijon mustard
1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
1/4 teaspoon freshly grated nutmeg
2 1/2 cups shredded sharp cheddar cheese, divided
1 cup shredded Gruyère cheese
Salt and freshly ground black pepper to taste

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Instructions

Prep the potatoes by peeling and slicing them uniformly. Place slices in a bowl of cold water.
Melt butter in a large saucepan over medium heat. Add onion and cook until soft, about 5 minutes. Add garlic and cook for 1 minute.
Sprinkle flour over the onions and cook, stirring constantly, for 2 minutes to form a roux.
Gradually whisk in the milk and cream. Bring to a gentle simmer and cook for 3-4 minutes until thickened.
Remove from heat. Stir in Dijon mustard, thyme, nutmeg, 1 1/2 cups cheddar, and all the Gruyère. Season generously with salt and pepper.
Drain potato slices and pat them very dry with a kitchen towel.
Spread a thin layer of the cheese sauce in a greased 9×13 inch baking dish.
Arrange a third of the potato slices in an even, overlapping layer. Spoon a third of the remaining sauce over them. Repeat layers two more times, ending with sauce.
For make ahead: Cover dish tightly with plastic wrap and refrigerate for up to 24 hours. Let sit at room temp for 30 minutes before baking.
Preheat oven to 375°F (190°C). Sprinkle reserved 1 cup cheddar cheese over the top.
Cover dish tightly with foil and bake for 45 minutes.
Remove foil and bake for an additional 15-30 minutes, until top is golden brown, sauce is bubbling, and a knife slides easily through the potatoes.

Notes

Patting the potato slices dry is crucial to prevent a watery sauce. Taste and season the cheese sauce well before assembling, as it will mellow when baked. For a main dish, add a layer of diced ham between the potatoes.

Nutrition

Serving Size: 8
Calories: 420
Sugar: 6
Sodium: 320
Fat: 24
Saturated Fat: 14
Unsaturated Fat: 8
Trans Fat: 0.5
Carbohydrates: 35
Fiber: 2
Protein: 18
Cholesterol: 75

Find it online: https://harmonymeal.com/make-ahead-scalloped-potatoes/