Scalloped potatoes should always feel rich, silky, and fork-tender. They should not be dry, crunchy, or swimming in sauce. This recipe gives you exactly that: a foolproof method to guarantee the best scalloped potatoes every time.

You will learn how to slice for even baking, build a sauce that thickens, and layer everything so it cooks evenly. I also share exact doneness cues, so you can stop guessing.

If you want a side dish that earns repeat requests, this is the recipe for you.

How To Make Scalloped Potatoes – step by step

3 lbs Russet potatoes,
3 tbsp unsalted butter
3 tbsp all-purpose flour
1 1/2 cups whole milk
1/2 cup heavy cream
3–4 cloves garlic, minced
1 tbsp SPG seasoning (or salt, pepper, garlic to taste)
1/2 tsp smoked paprika
1 cup shredded sharp cheddar
1/2 cup grated Parmesan (for topping)
Chopped chives (for garnish)

1) Slice the potatoes

Peel, then slice your potatoes thin and even, about 1/8 inch.
I recommend a Madeline slicer for perfectly thin slices.
If using one, make sure to use the guard for safety of your fingers.
Keep potato slices stacked as you work, so they do not dry out.

2) Build a real cream sauce

Now onto the sauce/roux start by melting butter in a saucepan over medium heat.
Add onion or garlic (if using), cook until fragrant.
Whisk in flour (if using a roux), cook 1 minute.
Slowly whisk in warm milk, half-and-half, or cream.
Season well with salt, pepper, and any herbs.
Simmer gently until the sauce lightly thickens.
You’ll know your sauce is done when the sauce coats a spoon easily, but still pours.

3) Layer for even cooking

With all your ingredients ready, start by greasing your baking dish.
Add a thin layer of sauce on the bottom.
Layer potatoes in overlapping rows.
Spoon sauce over the layer, then spread it to the edges.
Add your cheese ( leave some for the top)
Press the layers down lightly so the sauce fills the gaps in between the slices.
Repeat until you use all potatoes slices and sauce.
Finish off with a generous amount of cheese at the top.

4) Bake covered to cook the center

For that perfectly done center, you have to cover your baking dish with foil.
Bake on the center rack until the potatoes soften.
If the dish is deep or packed, it will take longer.
If you see dry corners, add a splash of hot milk around the edges.

5) Uncover to brown the top

For the last 10 minutes, remove foil for the final stretch to reduce the sauce.
Here is where i add a generous amount of cheese.
If you want more color, broil briefly at the end for that perfectly golden color.

6) Rest, then slice

Always rest your scalloped potatoes before serving so the sauce thickens.
Once cooked, slice with a sharp knife, then lift with a spatula.

Make ahead tips for perfect scalloped potatoes

One thing I love about scalloped potatoes is they’re make-ahead friendly. As a side dish, especially on holidays when you don’t have time or oven space to make everything on the day of, make your scalloped potatoes ahead.

Assemble ahead and bake tomorrow

This option has always worked for me on busy holidays when i have to feed a crows. This method keeps the texture closest to freshly baked.

Assemble the full scalloped potato casserole, then cover tightly.
Refrigerate up to 24 hours.
Let the dish sit at room temperature 30 to 45 minutes before baking.
Bake covered first, then uncover to brown as usual.

Bake ahead and reheat

Want stress-free hosting experience and tight on oven space, use this method

Bake the scalloped potatoes just until fully tender.
Cool, then cover and refrigerate.
Reheat covered until hot in the center.
Uncover for the last 10 to 15 minutes to brown the top.
Add a small splash of warm milk around the edges if it looks dry.

Par-bake today, finish tomorrow

This gives you a faster finish bake and a fresher top.

Bake covered until the potatoes are mostly tender.
Cool, cover, and refrigerate.
Finish baking uncovered tomorrow to heat through and brown the top.
A knife should meet slight resistance in the center, not crunch.

Easy Scalloped Potatoes Recipe

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Course: Side Dish

Cuisine: American

Ingredients Method

Ingredients

3 lbs Russet potatoes,
3 tbsp unsalted butter
3 tbsp all-purpose flour
1½ cups whole milk
½ cup heavy cream
4 cloves of garlic ( minced )
salt, pepper, garlic to taste
½ tsp smoked paprika
1 cup shredded sharp cheddar
½ cup grated Parmesan
Chopped chives (for garnish)

Method

Peel, then slice your potatoes thin and even, about 1/8 inch. Use a Madeline slicer for perfectly thin slices. Set aside

To Make the Roux

Now onto the sauce/roux start by melting butter in a saucepan over medium heat.
Add onion or garlic (if using), cook until fragrant
Whisk in flour (if using a roux), cook 1 minute
Slowly whisk in warm milk, half-and-half, or cream
Season well with salt, pepper, and any herbs
Simmer gently until the sauce lightly thickens

To assemble

With all your ingredients ready, grease your baking dish
Add a thin layer of sauce on the bottom
Layer potatoes in overlapping rows
Spoon sauce over the layer, then spread it to the edges
Add your cheese ( leave some for the top)
Repeat until you use all potatoes slices and sauce
Finish off with a generous amount of cheese at the top

To Bake

Cover the baking dish with foil
Bake it at 375F ( 190C ) FOR 35 - 45 minutes
15-minutes before the timer is up, uncover, check for any dry corners, add a splash of hot milk around the edges.
Add a generous amount of cheese.
Broil at the top for that beautiful golden top
Once timer is up, your scalloped potatoes are done
Rest for 10-minutes for the sauce to thicken and settle.
Serve and enjoy!!