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Copycat Ruth’s Chris Potatoes au Gratin

Copycat Ruth’s Chris Potatoes au Gratin is a rich and creamy side dish made with tender, thinly sliced potatoes smothered in a velvety blend of cream, cheese, and seasonings. It’s not overly heavy but indulgent enough to feel like a special treat. Perfect for holiday gatherings or a comforting weekend dinner, this dish is sure to impress. If you’re a fan of creamy, cheesy potato dishes, you’ve come to the right place.

Equipment

  • Mandoline slicer (optional for thin, even slices)
  • 9x13-inch baking dish
  • Large saucepan
  • Whisk
  • Mixing bowls
  • Measuring cups and spoons
  • Sharp knife
  • Cutting board
  • Aluminum foil

Ingredients
  

  • 4 large russet potatoes peeled and sliced thinly
  • 2 cups shredded sharp cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 2 cups heavy cream
  • 4 tablespoons unsalted butter
  • 2 cloves garlic minced
  • Salt and freshly ground black pepper to taste

Instructions
 

  • Preheat the oven to 350°F (175°C) and grease a 9x13-inch baking dish.
  • Peel and thinly slice the russet potatoes, using a mandoline or sharp knife.
  • In a large saucepan, melt the butter over medium heat and sauté the garlic for 30 seconds. Add the heavy cream and bring to a simmer.
  • Stir in the shredded cheddar and grated Parmesan, whisking until melted and smooth. Season with salt and pepper.
  • Layer half of the potato slices in the baking dish, pour half of the cheese sauce over them, and repeat with the remaining potatoes and sauce.
  • Cover with foil and bake for 45 minutes. Remove the foil and bake for another 15-20 minutes, or until golden and bubbly.
  • Let rest for 10 minutes before serving.