Copycat Ruth’s Chris Potatoes au Gratin Recipe
Introduction
This Copycat Ruth’s Chris Potatoes au Gratin offers a rich, creamy, and cheesy side dish that perfectly complements any meal. With tender russet potatoes baked in a flavorful cream sauce and topped with a golden cheese crust, it’s a crowd-pleaser that’s easier to make at home than you might think.

Ingredients
- 2 tbsp butter (plus extra for greasing the dish)
- 1/2 medium onion (minced)
- 1 clove garlic (minced)
- 1.25 tsp salt (for seasoning)
- 1/2 tsp ground black pepper (for seasoning)
- 3/4 cup chicken stock (for sauce)
- 1.25 cups heavy cream (for creamy texture)
- 1.5–1.75 lbs russet potatoes (about 5–6, peeled and sliced 1/8 inch thick)
- 3 cups shredded cheese (mix of 2 cups Cheddar, 3/4 cup Fontina or Provolone, and 1/4 cup Parmesan)
- 1 tbsp chopped parsley (for garnish)
Instructions
- Step 1: Preheat your oven to 425°F (220°C) to ensure even baking.
- Step 2: In a large skillet over medium heat, melt 2 tablespoons of butter. Add the minced onion and cook for about 5 minutes until soft. Then add the garlic, salt, and pepper, cooking for an additional 30 seconds until fragrant.
- Step 3: Pour in the chicken stock and heavy cream, stirring to combine. Add the thinly sliced potatoes, ensuring they are well-coated in the sauce.
- Step 4: Increase the heat to bring the mixture to a simmer. Cover, reduce heat to medium-low, and cook until the potatoes are nearly tender, about 15–20 minutes. Stir occasionally to prevent sticking.
- Step 5: Butter an 8×8-inch baking dish or five to six small individual dishes.
- Step 6: Transfer the potatoes and sauce to the prepared baking dish, spreading evenly. Top with an even layer of the shredded cheese mixture.
- Step 7: Bake for 10–15 minutes, or until the cheese is melted and golden brown. Let the dish rest for a few minutes before serving.
- Step 8: Sprinkle with chopped parsley and serve warm. Enjoy!
Tips & Variations
- For a sharper flavor, substitute some of the Cheddar with Gruyère or Asiago cheese.
- Use a mandoline slicer to ensure even, thin potato slices for consistent cooking.
- For a vegetarian version, replace chicken stock with vegetable broth or water.
- Add a pinch of nutmeg to the cream sauce for an extra layer of warmth and depth.
Storage
Store any leftover potatoes au gratin in an airtight container in the refrigerator for up to 3 days. To reheat, cover the dish with foil and warm in a 350°F (175°C) oven until heated through, about 15–20 minutes. Avoid microwaving to maintain the creamy texture and avoid drying out.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use different types of potatoes?
Russet potatoes work best for a creamy texture and to absorb the sauce, but Yukon Gold potatoes can also be used for a slightly butterier flavor and creamier consistency.
Is it possible to prepare this dish ahead of time?
Yes, you can assemble the dish up to a day in advance, cover it tightly, and refrigerate. Bake just before serving, adding a few extra minutes if it’s cold from the fridge.
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Copycat Ruth’s Chris Potatoes au Gratin Recipe
- Total Time: 50 minutes
- Yield: 6 servings 1x
Description
This Copycat Ruth’s Chris Potatoes au Gratin recipe offers a creamy, cheesy, and decadent side dish with tender russet potatoes baked in a savory butter, onion, garlic, and cream sauce. Perfectly baked to a golden brown finish, it mimics the iconic steakhouse favorite, featuring a blend of sharp Cheddar, creamy Fontina or Provolone, and nutty Parmesan cheese, garnished with fresh parsley for a burst of color and flavor.
Ingredients
Main Ingredients
- 2 tbsp butter (plus extra for greasing the dish)
- 1/2 medium onion, minced
- 1 clove garlic, minced
- 1.25 tsp salt (for seasoning)
- 1/2 tsp ground black pepper (for seasoning)
- 3/4 cup chicken stock (for sauce)
- 1.25 cups heavy cream (for creamy texture)
- 1.5–1.75 lbs russet potatoes (about 5-6, peeled and sliced 1/8 inch thick)
- 3 cups shredded cheese (mix of 2 cups Cheddar, 3/4 cup Fontina or Provolone, and 1/4 cup Parmesan)
- 1 tbsp chopped parsley (for garnish)
Instructions
- Preheat the Oven: Preheat your oven to 425°F (220°C) to ensure even baking of the potatoes au gratin.
- Prepare the Butter and Onion: In a large skillet over medium heat, melt 2 tablespoons of butter. Add the minced onion and cook for about 5 minutes until softened. Then add the minced garlic, salt, and black pepper, cooking for an additional 30 seconds until fragrant.
- Combine Ingredients: Pour in the chicken stock and heavy cream into the skillet, stirring to combine all ingredients well. Add the thinly sliced potatoes, making sure they are completely coated in the creamy sauce.
- Simmer the Potatoes: Increase the heat to bring the mixture to a gentle simmer. Cover the skillet, reduce the heat to medium-low, and cook for 15-20 minutes until the potatoes are nearly tender, stirring occasionally to prevent sticking and ensure even cooking.
- Prepare the Casserole Dish: Butter an 8×8-inch baking dish or multiple small individual baking dishes to prevent sticking and add richness.
- Assemble the Dish: Carefully transfer the potatoes and the creamy sauce mixture into the prepared baking dish. Spread evenly, then top with an even layer of the shredded cheese blend—Cheddar, Fontina or Provolone, and Parmesan—covering the surface completely.
- Bake the Dish: Place the baking dish in the preheated oven and bake for 10-15 minutes, or until the cheese has melted and developed a golden brown crust. Remove from oven and let it rest for a few minutes.
- Garnish and Serve: Sprinkle the top with chopped fresh parsley for a pop of color and fresh flavor. Serve the potatoes au gratin warm for a rich, creamy side dish experience.
Notes
- To get the best flavor, peel and slice the potatoes evenly about 1/8 inch thick for uniform cooking.
- You can substitute half-and-half for heavy cream for a lighter version, but the texture will be less creamy.
- Use a mix of cheeses to achieve the best balance of melting and flavor.
- Allow the dish to rest after baking so the sauce can thicken slightly before serving.
- For a vegetarian version, substitute vegetable stock for chicken stock.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Keywords: Potatoes au Gratin, Ruth’s Chris, copycat recipe, cheesy potato casserole, baked potatoes, creamy potatoes, side dish

