Description

Recreate the rich, creamy, and decadent Potatoes au Gratin from Ruth’s Chris Steak House in your own kitchen with this easy-to-follow copycat recipe. Perfect for steak dinners or any special occasion.

Ingredients

Scale

2 ½ pounds Russet potatoes, peeled and thinly sliced (about 1/8-inch thick)
3 cups heavy cream
1 cup whole milk
2 cloves garlic, minced
½ teaspoon kosher salt, plus more to taste
¼ teaspoon freshly ground black pepper, plus more to taste
Pinch of nutmeg
1 ½ cups shredded Gruyère cheese
1 cup shredded sharp cheddar cheese
2 tablespoons unsalted butter, softened
1 tablespoon chopped fresh chives, for garnish (optional)

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Instructions

1. Preheat your oven to 350°F (175°C). Butter a 9×13 inch baking dish generously.
2. In a large saucepan, combine the heavy cream, whole milk, minced garlic, ½ teaspoon kosher salt, ¼ teaspoon black pepper, and nutmeg. Heat this mixture over medium heat, stirring occasionally, until it just begins to simmer. Do not boil. Remove from heat.
3. Arrange half of the thinly sliced potatoes in a single layer in the prepared baking dish.
4. Evenly sprinkle half of the Gruyère cheese and half of the cheddar cheese over the potatoes.
5. Pour half of the warm cream mixture over the cheese and potatoes.
6. Layer the remaining sliced potatoes on top of the first layer.
7. Pour the remaining cream mixture over the second layer of potatoes, ensuring they are mostly submerged.
8. Cover the baking dish tightly with aluminum foil.
9. Bake for 45 minutes.
10. Remove the foil and bake for another 25-35 minutes, or until the potatoes are tender when pierced with a fork and the top is golden brown and bubbly. If the top browns too quickly, you can loosely tent it with foil.
11. Let the potatoes au gratin rest for 10-15 minutes before serving. This allows the sauce to thicken and makes it easier to serve.
12. Garnish with fresh chives, if desired.

Notes

For best results, let the potatoes au gratin rest for 10-15 minutes after baking before serving. This allows the sauce to thicken properly. Store any leftovers tightly covered in the refrigerator for up to 3-4 days. Reheat in the oven at 325°F (160°C) for best texture.

Prep Time: 20 minutes
Cook Time: 70-80 minutes
Category: Side Dish
Method: Baked
Cuisine: American

Nutrition

Serving Size: 1 serving
Calories: 500
Sugar: 5g
Sodium: 500mg
Fat: 40g
Carbohydrates: 35g
Fiber: 3g
Protein: 12g