Copycat Potatoes au Gratin

Recreate the Magic of Ruth’s Chris with Copycat Potatoes au Gratin

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Get ready to elevate your dinner table with the irresistible flavor of Copycat Ruth’s Chris Potatoes au Gratin. This decadent side dish pays homage to the famous steakhouse classic, delivering layers of creamy, cheesy goodness that will have your taste buds singing. Whether you’re hosting a special occasion or simply craving a taste of luxury at home, this recipe is sure to impress. Join us as we delve into the steps to recreate this iconic dish, along with some helpful tips, variations, and keto-friendly alternatives.


  • 2 tablespoons butter, plus more for greasing baking dish
  • 1/2 white onion, minced
  • 2 garlic cloves, minced
  • 1 1/2 teaspoons salt
  • 1/2 teaspoon freshly ground black pepper
  • 1/2 cup chicken stock
  • 1 1/4 cups heavy cream, plus more if needed
  • 1 1/2 lbs russet potatoes, peeled and sliced 1/8-inch thick
  • 2 cups cheddar cheese, grated
  • 3/4 cup provolone cheese, grated
  • 1/2 cup Parmesan cheese, grated
  • Fresh parsley, chopped, for garnish


  1. Preheat the Oven:
    • Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter and set aside.
  2. Prepare the Onion and Garlic Mixture:
    • In a skillet over medium heat, melt 2 tablespoons of butter. Add the minced onion and garlic, and sauté until softened and fragrant, about 3-4 minutes. Season with salt and pepper.
  3. Create the Cream Mixture:
    • Pour in the chicken stock and heavy cream, stirring to combine. Let the mixture simmer for a few minutes until slightly thickened. Adjust seasoning if necessary.
  4. Assemble the Layers:
    • Arrange a layer of sliced potatoes in the bottom of the prepared baking dish. Spoon a portion of the cream mixture over the potatoes, then sprinkle with a blend of cheddar, provolone, and Parmesan cheeses. Repeat the layers until all ingredients are used, finishing with a layer of cheese on top.
  5. Bake to Perfection:
    • Cover the baking dish with foil and bake in the preheated oven for 45-50 minutes, or until the potatoes are tender and the cheese is golden and bubbly.
  6. Garnish and Serve:
    • Remove the foil from the baking dish and sprinkle the top with chopped fresh parsley for a pop of color and flavor. Allow the Potatoes au Gratin to cool slightly before serving.

Cook Notes and Variations:

  • Potato Thickness: It’s important to slice the potatoes uniformly to ensure even cooking. Using a mandoline slicer can help achieve consistent thickness.
  • Cheese Variations: Feel free to experiment with different cheese combinations to suit your taste. Gruyère, fontina, or Swiss cheese can also be used in place of or in addition to the suggested cheeses.
  • Creamy Texture: For an extra creamy texture, you can increase the amount of heavy cream or add a dollop of sour cream to the cream mixture.

Frequently Asked Questions (FAQs):

Q: Can I use a different type of potato for this recipe? A: While russet potatoes are traditional for Potatoes au Gratin, you can also use Yukon Gold or red potatoes for a slightly different flavor and texture.

Q: Can I make this dish ahead of time? A: Yes, you can assemble the Potatoes au Gratin ahead of time and refrigerate it until ready to bake. Simply cover the baking dish with foil and store it in the refrigerator for up to 24 hours before baking as directed.

Q: How do I reheat leftovers? A: To reheat leftover Potatoes au Gratin, cover the baking dish with foil and warm it in a preheated oven until heated through. Alternatively, individual portions can be reheated in the microwave.

Q: Can I freeze this dish? A: While Potatoes au Gratin can be frozen, the texture may change slightly upon thawing and reheating. To freeze, tightly wrap the cooled dish in plastic wrap and foil, then store it in the freezer for up to 1-2 months.

Q: Can I make a keto-friendly version of this recipe? A: Yes, you can make a keto-friendly version by using cauliflower instead of potatoes and substituting heavy cream for any milk or stock. You can also reduce or omit the onions and garlic to further lower the carb content.

Keto and Low-Carb Versions:

For those following a keto or low-carb lifestyle, here’s how you can adapt this recipe:

  • Keto Version: Replace the russet potatoes with sliced cauliflower and use heavy cream instead of chicken stock. Adjust the seasonings to taste and omit or reduce the amount of onion and garlic.
  • Low-Carb Version: Follow the keto version adjustments above and consider using a combination of low-carb cheeses such as mozzarella, Monterey Jack, and cream cheese.

Indulge in the luxurious flavors of Ruth’s Chris Potatoes au Gratin from the comfort of your own home with this copycat recipe. With its creamy texture, savory onion and garlic blend, and rich cheese topping, this dish is sure to become a family favorite. Whether served as a side dish for a special dinner or enjoyed as a comforting indulgence on a cozy evening, these Potatoes au Gratin are guaranteed to impress. So gather your ingredients, preheat your oven, and get ready to savor every decadent bite of this classic dish!

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