The Cheesiest Potatoes Au Gratin

Potatoes Au Gratin is a classic side dish that’s wonderful all year long. But it’s especially great during the holiday season! This post is a paid collaboration with Borden® Cheese, who I’ve teamed up with to bring you this cheesy potatoes au gratin recipe that’s perfect for celebrating the holidays with family!

This Cheesy Potatoes Au Gratin recipe is perfect for celebrating the holidays with friends and family! Sharp cheddar cheese takes it to a whole new level.

There’s nothing more important to me than family. While I’d love to experience living in other parts of the world, I settle for traveling when I can. At the end of the day, I’d rather be close to my family so that I can see them regularly throughout the year.

We love getting together to celebrate the holidays, so when Borden® Cheese reached out to me about their #BordenHome4Holidays​ campaign​ and contest​, it seemed like a natural fit.

Luckily for me, I don’t have to travel far to enjoy being home for the holidays. My parents live 35 minutes away by car. My brother, his wife, and my soon-to-be niece or nephew live another 25 minutes past them!

A lot of my extended family also lives in the area. It’s fantastic.

A photo of cheese and potatoes being layered into a casserole dish for au gratin potatoes.

We like mixing it up a bit each year, and don’t always make the same recipes. However, we all LOVE cheesy potato recipes. Broccoli Cheddar Twice-Baked Potatoes, Cheesy Potato Soup, these sort of things. This year I decided to go a bit more classic with an extra cheesy Potatoes Au Gratin recipe.

A photo of the finished layers of potato gratin, about to be placed into the oven.

How to Make Potatoes au Gratin

  • Au gratin potatoes are traditionally made with gruyere cheese, but I went with cheddar for this recipe, because I absolutely love the way cheddar and potatoes pair together. I stuffed this au gratin with an insane amount of cheddar.
  • I recommend using a mandoline to slice the potatoes if possible so you get thin, even slices that stay flat and bake evenly.

In addition to being creamy and super flavorful, Borden® Cheese has a lot of protein, so I figure that kind of balances out all of the potatoes, right? Plus, it’s the holiday season. This is not a time for cheese restraint.

A photo of the cheesiest potatoes au gratin, straight out of the oven, served in a bowl.

Borden® Cheese is hosting an epic contest that will bring families together to celebrate the holidays! They’re selecting winners from across the country and awarding each with a $500 VISA cash gift card to use towards the cost of travel expenses! They’re giving away $100,000 total in gift cards!

Entry is easy cheesy (see what I did there?):

  1. Visit
  2. Share why it’s important for you to get home for the holiday season.

The contest will run from Sunday, November 19 through Friday, December 8, 2017. The winners will be notified on Monday, December 11, 2017! Good luck, everyone!

A closeup shot of cheesy au gratin potatoes.

This Cheesy Potatoes Au Gratin recipe is perfect for celebrating the holidays with friends and family! Sharp cheddar cheese takes it to a whole new level.

The​ ​Cheesiest​ ​Potatoes​ ​Au​ ​Gratin

5 from 6 votes
This Cheesy Potatoes Au Gratin recipe is perfect for celebrating the holidays with family!
Course Side Dish
Cuisine American
Prep Time 30 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 40 minutes
Servings 12
Calories 356


  • 3 1/2 pounds russet potatoes (about 5 medium)
  • 4 ounces unsalted butter, plus more for greasing the pan
  • 1 medium yellow onion, diced
  • 1 clove garlic, minced
  • 1/4 cup + 2 tablespoons all-purpose flour
  • 2 teaspoons kosher salt, plus more as needed
  • 1 teaspoon ground black pepper, plus more as needed
  • 4 cups half-and-half (whole milk may be substituted)
  • 4 cups Borden® Cheese Sharp Cheddar Shreds, divided
  • Optional for serving: chopped fresh chives and fresh ground black pepper


  • Preheat oven to 400 degrees F. Generously butter a 3 1/2-quart casserole dish (see notes).
  • Peel potatoes and slice to approximately 1/6-inch thin on a mandolin (or using a knife). Submerge completely in a large bowl filled with cold water to prevent oxidation.
  • In a medium-sized saucepan, heat 2 tablespoons of the butter over medium-low heat. Add the onions and garlic. Cook, stirring periodically, until translucent, 3-5 minutes. Turn up the heat to medium and cook for an additional minute, stirring, until the onions have caramelized slightly.
  • Add the remaining butter. Mix in the flour and whisk constantly for 2-3 minutes to cook out the flour taste. Stir in half-and-half, salt and pepper, then whisk until mixture has thickened, 3-5 minutes. Remove from the heat, and add 3 cups of the cheese in handfuls. Continue stirring until melted, about 30 to 60 seconds.
  • Drain the potatoes, using paper towels to pat away excess water. Layer half evenly in the casserole dish. Pour half the cheese over the potatoes and top with 1/2 cup cheddar cheese. Repeat with the remaining potatoes, cheese sauce and shredded cheddar. Cover the casserole dish with a tight-fitting lid or aluminum foil.
  • Bake for 45 minutes, then remove the foil. Bake for another 15-20 minutes, until the top is golden. For the final few minutes, you can optionally turn on the broiler to further crisp up the top. If you do this, keep a very close eye on it!
  • Remove from the oven. If using, top individual servings with chives and freshly ground black pepper.


I used a 3 1/2 quart round casserole dish, but any rectangle or square dish that holds 3 1/2 to 4 quarts will work. If you’re not sure how much your casserole dish holds, test it by adding water.


Calories: 356kcal | Carbohydrates: 31g | Protein: 14g | Fat: 15g | Saturated Fat: 9g | Cholesterol: 58mg | Sodium: 659mg | Potassium: 694mg | Fiber: 1g | Sugar: 1g | Vitamin A: 12% | Vitamin C: 10.9% | Calcium: 26.3% | Iron: 8.4%

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This Cheesy Potatoes Au Gratin recipe is perfect for celebrating the holidays with family!

About Jennifer Farley

Jennifer graduated from the Culinary Arts program at L’Academie de Cuisine in Maryland, and has worked professionally as a line cook, pastry chef, and cooking instructor. Her cookbook, The Gourmet Kitchen, was published in 2016 by Simon & Schuster.

Recipe Troubleshooting

For immediate help troubleshooting a recipe, please email I’ll try to respond to urgent questions as quickly as possible! This email address is only for recipe troubleshooting; Solicitations sent to this email will be ignored.

Affiliate Disclaimer: Posts may contain affiliate links. I am a participant in the rewardStyle and Amazon affiliate programs, which help support Savory Simple by providing me with a small commission fee when you shop through my links, at no additional cost to you.

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