Cheesy Scalloped Potatoes

This scalloped potatoes recipe is the creamiest, most comforting dish of goodness ever. I make these for every holiday and they’re always one of the first things gone! 

homemade scalloped potatoes in white dish

Easter is coming up and it’s on April Fool’s Day this year.

My husband thinks we should tell the kids to go find the Easter eggs in the backyard without actually hiding them. April Fool’s to them.

He’s mean. But also, I’m down for that idea.

Anyway, with the holiday coming up, I had to share one of our favorite holiday side dishes with you guys.

I think you’re going to love this one so much.

Whether you call this cheesy scalloped potatoes or potatoes au gratin, you’re going to flip over the supremely creamy sauce that is coating these potatoes.

Please don’t skimp on the sauce.

potatoes au gratin recipe in white dish

When you start pouring it on, it’s going to seem like overkill.

You’re going to think you’ve overdone it.

Let me tell you a secret: You have not overdone it.

These homemade scalloped potatoes are going to be the most delicious thing on your Easter plate, I can almost guarantee it.

Make them alongside my Jiffy corn casserole with my homemade brownies for dessert.

These cheesy scalloped potatoes are great at holiday dinners, but they also go great with my turkey meatloaf.

I like to start with the white cheddar cheese sauce.

au gratin potatoes on white dish

How to make cheese sauce:

This cheese sauce is totally simple and oh so creamy! You’re going to want to eat it with a spoon.

You’ll start by making a roux – this just means that you’ll melt some butter, stir in some flour, and whisk in milk and cream until everything starts to thicken up.

I add onions to this recipe so I cook them with the butter for a few minutes before adding the flour. I like them nice and soft.

cheesy potatoes in white dish

Normally, we’d just remove the roux from the heat and stir in some grated cheese, but we’re not stopping there today. We want these potatoes to be extra creamy and delicious.

After you stir in the cheese and get the sauce nice and smooth, you’re going to add a can of cream of chicken soup (just trust me on this) and some sour cream.

The creaminess of this cheese sauce is out of this world.

White cheddar normally has a bit of a bite to it, but it mellows out really nicely with all of the creamy goodness going on in this sauce.

cheesy scalloped potatoes on white plate

How to make scalloped potatoes:

Once the cheese sauce is made, just set it aside and get started on the potatoes.

We’re doing the cheese sauce first, becuase the potatoes turn brown fairly quick after slicing and nobody likes the looks of that.

You’ll need a whole lot of Idaho potatoes. Wash them and peel them.

Now, if you have a food processor, put it to work. Use the slicer attachment and slice your potatoes into thin slices, about 1/8 of an inch thick.

I use my Breville Sous Chef food processor (affiliate link) for this. It’s a total workhouse and gets the whole batch of potatoes done in about a minute. Easy peasy.

scalloped potatoes recipe on white plate

Your second option is to use a mandoline. This one has great reviews. (Also an affiliate link) This method will take a little longer, but you’ll get even slices in a fairly short amount of time.

And, last, is a knife. Obviously, this option is going to take the longest, because you’re slicing the potatoes THIN and EVEN. But, if you don’t have a food processor or mandoline, this is the only way to go.

Spray a 9×13 baking dish with non-stick spray and place half of the potatoes in the dish. It’ll be a nice thick layer of potatoes.

Top with half of the cheese sauce.

Now, I know that it seems like a LOT of cheese sauce. That’s because it is. Just trust me.

au gratin potatoes on white dish

Repeat the layers and then cover the dish with foil and bake for 30 minutes.

You’ll take the foil off and keep baking for another 45 minutes or so. We want those potatoes nice and tender and the cheese sauce good and bubbly.

You won’t even be able to handle the goodness that comes out of your oven. Just you wait.

If you’re looking for a low carb side dish, try this cauliflower potato salad! There’s bacon and cheddar involved, so you know it’s good.

Let me know if you try this scalloped potatoes recipe! I can’t wait to hear what you think!

Cheesy Scalloped Potatoes

Prep Time 20 mintues Cook Time 1 hour 15 minutes Total Time 1 hr 15 mins
Serves 10     adjust servings

These cheesy scalloped potatoes are coated in the thickest, creamiest cheese sauce. This is pure comfort food!

Ingredients

  • 1/4 cup butter
  • 1 medium onion, finely chopped
  • 1/4 cup all-purpose flour
  • 2 cups milk
  • 1 cup heavy cream
  • 2 cups shredded sharp white cheddar cheese
  • 1 can (10-3/4 ounces) condensed cream of chicken soup, undiluted
  • 1 cup (8 ounces) sour cream
  • 1 teaspoon salt
  • 1 teaspoon dried parsley flakes
  • 1/2 teaspoon pepper
  • 8 cups thinly sliced peeled potatoes

Instructions

  1. Preheat oven to 375 degrees. Spray a 9x13 baking dish with non-stick spray.
  2. Add the butter to a large sauce pan over medium heat and melt. Stir in the onions and cook until beginning to soften, about 5 minutes.
  3. Sprinkle the flour over the onions and cook, stirring constantly, for 1 minute.
  4. Pour in the milk and cream while whisking the mixture constantly. Continue cooking over medium heat, whisking constantly, until mixture begins to thicken, about 3 minutes. 
  5. Remove from the heat and stir in the grated cheddar. Stir until cheese has melted and mixture is smooth.
  6. Stir in the cream of chicken soup, sour cream, salt, parsley, and pepper until combined. 
  7. Place half of the potatoes in a thick layer in the prepared 9x13. Pour half of the cheese sauce over the top. Repeat the layers. 
  8. Cover tightly with foil and bake for 30 minutes.
  9. Remove the foil carefully and continue baking for 45 minutes or until potatoes are soft. 
  10. Serve immediately.

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Disclaimer: The nutrition information presented below is not guaranteed to be accurate.

Affiliate Links: This blog contains affiliate links.
Nutrition Facts
Serving Size
Amount Per Serving As Served
Calories 424kcal Calories from fat 261
% Daily Value
Total Fat 29g 45%
Saturated Fat 17g 85%
Transfat 0g
Cholesterol 87mg 29%
Sodium 641mg 27%
Carbohydrate 31g 10%
Dietary Fiber 3g 12%
Sugars 5g
Protein 12g

Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs:

Calories 2000
Total Fat Less than 65g
Sat Fat Less than 25g
Cholesterol Less than 300mg
Sodium Less than 2,400mg
Total Carbohydrate 300g
Dietary Fiber 25g