Potatoes Au Gratin

Scalloped Potatoes Au Gratin

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Potatoes Au Gratin is a traditional side dish at Easter, but they are a delicious side dish at any time. These cheesy potatoes are gluten-free because you won’t need flour to make them creamy, just cream, cheese, and the starch from the potatoes.

Cast iron skillet pan of baked potatoes au gratin
Potatoes Au Gratin

What is Au Gratin?

According to Merriam-Webster, Au Gratin is a French cooking term which means “covered with breadcrumbs or grated cheese, or both, and browned. These Classic Stuffed Mushrooms are another example of a dish cooked Au Gratin, that one using breadcrumbs.

Although they are similar, Au Gratin and Scalloped Potatoes are two different dishes. Au Gratin potatoes have cheese, while scalloped potatoes do not. Check out this recipe for Sweet Potato Scallop for a delicious twist on the classic.

A pan of potatoes with cheese on a wooden table

Choosing the right potato

Absolutely any potato will work for these cheesy potatoes. But, if you are keeping the dish classic, which means no flour, then, ideally, you will want the starchier potatoes, which are russets. Yukon Gold are a good second choice but they don’t have as much starch as russets. The starch in the potatoes will help to thicken the cream as the dish bakes.

Potatoes Au Gratin

Which Cheese to Use

As with the choice of potato, any cheese will be delicious. However, my favourite is Gruyère, the fondue cheese. The reason for that is because that Gruyere melts up ultra creamy and has a richness that works well for potatoes. I also used aged cheddar to top the gratin, which adds a nice sharpness.

A plate of food on a wooden table

Slicing Your Potatoes

If you’re using russet potatoes, they will need to be peeled. A thinner skinned potato, like a Yukon Gold, can be used unpeeled. The thinner that you slice the potatoes, the faster the dish will cook. I find that a 1/8 inch slice works well for allowing the potatoes to keep their shape, without an overly long baking time. A mandolin or a food processor with a slicing attachment make quick work of slicing.

A plate of food sitting on top of a wooden table


Scalloped Potatoes Au Gratin

Potatoes Au Gratin

Potatoes, cream, 2 cheeses, and onion are delicious in this simple, but classic dish that's always a hit with everyone at the table.
5 from 8 votes
Prep Time 20 mins
Cook Time 1 hr 15 mins
Resting time 15 mins
Total Time 1 hr 50 mins
Course Side Dish
Cuisine French, Gluten Free
Servings 8
Calories 449 kcal


  • 1 tbsp butter
  • 3 lb russet potatoes peeled & sliced 1/8" thick
  • 1 onion large, thinly sliced
  • 1 cup whipping cream
  • 2 garlic cloves minced
  • 2 cups Gruyere cheese grated
  • 1 cup cheddar cheese grated
  • 2 tbsp parsley chopped


  • Preheat oven to 350°
  • Butter a 12" cast iron skillet or baking dish.
  • stir the garlic into the whipping cream.
  • arrange 1/3 of the potatoes in the dish, overlapping them. layer 1/2 of the onion slices evenly over the potatoes. Pour 1/3 cup whipping cream over the layer, and spread 1/2 the Gruyere cheese. 
  • Repeat the process in the step above.
  • Arrange the remaining potatoes evenly over the top, and pour over the last 1/3 cup whipping cream, pressing the potatoes down so they are submerged in the liquid.  Arrange the cheddar cheese over the top.
  • Bake 1 hr 15 minutes, until potatoes are tender and top is starting to brown.  Remove from oven and garnish with parsley.
  • Let stand 15 minutes before slicing and serving.


Because cheese is salty, I haven't added and salt to the recipe, but if you prefer to, sprinkle salt and pepper on each layer of potatoes.
Additions such as crumbled bacon, diced ham, mushrooms, or other veggies are delicious in this dish.


Serving: 1gCalories: 449kcalCarbohydrates: 33gProtein: 17gFat: 27gSaturated Fat: 17gCholesterol: 95mgSodium: 232mgPotassium: 797mgFiber: 2gSugar: 1gVitamin A: 1015IUVitamin C: 12.4mgCalcium: 483mgIron: 1.7mg
Tried this recipe? What changes did you make?Let us know how it was!

22 thoughts on “Potatoes Au Gratin

  1. I love au gratin potatoes, and love that you didn’t skimp on the cheese. Will have to try this recipe the next time we have a big dinner.

  2. I’m with Leanne, haha – how did I not know this. I always assumed scalloped potatoes have cheese, and now I know. Thanks for sharing these yummy cheesy potatoes. My family will be all over them.

  3. As a foodie, I probably should have known the difference between au gratin and scalloped potatoes. So thanks for sharing that tidbit! 😉 These cheesy potatoes would definitely be a hit with my family!

  4. This looks unbelievably comforting!! With potatoes, cheese and cream, there is absolutely no going wrong here! I could legit make a whole meal out of these alone – no joke!!

  5. Potatoes au Gratin are one of my faves for family dinners. Sometimes I’ll add some chopped ham and some corn to make it more like a casserole. I love how you did it in the cast iron skillet, looks really tasty!

    1. Hi Bernice, yes, potatoes au gratin are perfect for add ins like chopped ham, or broccoli. We love it just as is, too, though, and I love using my cast iron for everything!

    1. Markus, this is one delicious post. That ham looks amazing! Thanks so much for including my Au Gratin Potatoes, and I am excited to share this post for Easter. Happy Easter to you and your family.

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