Side Dishes
This Ruth’s Chris potatoes au gratin copycat recipe brings home the same crispy, vinegar-kissed crowns and ultra-creamy layers that make the dish legendary. The secret lies in precise layering and a baking technique that achieves that signature golden crust while keeping the interior silky-smooth.
I've perfected this copycat version after years of testing, and it consistently earns rave reviews from even the most discerning diners.
What sets this recipe apart is the combination of thinly sliced Yukon Gold potatoes with a rich béchamel sauce enhanced by white wine and a touch of vinegar. The vinegar creates that signature tangy brightness that cuts through the richness, while the white wine adds depth to the sauce.
Baking at the right temperature for the right amount of time ensures the top layer develops that coveted crispy texture while the bottom remains perfectly tender.
The result is a dish that looks and tastes exactly like what you'd order at Ruth's Chris—golden, bubbling edges that give way to creamy, cheesy potato layers underneath.
The aroma alone will have everyone gathering around the table, and the first bite delivers that perfect balance of crispy, creamy, and savory flavors. This is the kind of side dish that transforms an ordinary meal into something special.
Whether you're serving it alongside steak for a romantic dinner or as the centerpiece of a holiday feast, this potatoes au gratin recipe delivers restaurant-quality results at home. The technique is straightforward once you understand the key steps, and the payoff is worth every minute of preparation.
Let's get started on creating this copycat masterpiece that will impress even the toughest critics.
Ingredients for ruth's chris potatoes au gratin copycat
Thinly sliced Yukon Golds, rich béchamel, and crispy vinegar-kissed crowns—this copycat delivers restaurant perfection.
| Ingredient | Amount | Notes |
|---|---|---|
| Yukon Gold Potatoes 🥔 | 3 lb | Thinly sliced, peeled |
| Heavy Cream 🥛 | 2 cups | Full-fat for richness |
| Whole Milk 🥛 | 1 cup | Room temperature |
| White Wine 🍷 | ½ cup | Dry, such as Chardonnay |
| White Wine Vinegar 🍶 | 2 tbsp | For signature tang |
| Unsalted Butter 🧈 | ¾ cup | Cold, cubed |
| All-Purpose Flour 🌾 | ½ cup | For thickening |
| Gruyère Cheese 🧀 | 2 cups | Freshly grated, aged |
| Sharp White Cheddar 🧀 | 1 cup | Freshly grated |
| Garlic Cloves 🧄 | 4 cloves | Minced, for depth |
| Salt 🧂 | 1 ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground |
| Nutmeg 🌿 | ¼ tsp | Freshly grated |
| Panko Breadcrumbs 🍞 | ½ cup | For crispy crowns |
| Bacon Fat 🥓 | 2 tbsp | Or olive oil |
The Yukon Gold potatoes are non-negotiable here—their waxy texture holds up to slicing and baking without turning mushy. Look for firm, unblemished tubers at Whole Foods or your local market; they should feel heavy for their size. Thinly slicing them (about 1/8-inch thick) is critical—use a mandoline for precision. The Gruyère and sharp white cheddar blend is key for that signature nutty, tangy depth; Penzeys carries high-quality aged Gruyère if you want to splurge. Freshly grated cheese makes all the difference—pre-shredded contains anti-caking agents that prevent proper melting.
No white wine? Substitute chicken broth with an extra splash of vinegar for the tang. Short on Gruyère? Swiss cheese at half the amount works, but the flavor won’t be identical. The vinegar is what creates that signature brightness—apple cider vinegar in a pinch, but white wine vinegar is ideal. For the béchamel, butter must be cold when adding flour to avoid lumps; use a whisk for a silky texture. The panko topping should be lightly toasted in bacon fat before baking to enhance crispiness. If you’re short on time, toasted breadcrumbs work too, though they won’t be as crunchy.
This dish reheats beautifully—cover with foil and bake at 350°F for 15 minutes to restore creaminess. Store leftovers in an airtight container for up to 4 days; the flavors deepen overnight. For make-ahead prep, assemble the dish (without baking) and refrigerate for up to 24 hours before baking. The panko topping can be prepped ahead and stored in a sealed container for 3 days. Freeze unbaked portions for up to 1 month—just add 10-15 minutes to baking time when reheating.
Why You'll Love This Recipe
- I’ll be real: heavy cream and Yukon Golds aren’t cheap, but this recipe stretches further than you’d think. A single batch feeds four generously, and the leftovers? Still ridiculously good the next day. Plus, using whole milk instead of all cream cuts costs without sacrificing that velvety texture. It’s fancy enough for company, but practical enough for a lazy Sunday.
- One-Pot Magic: I swear by this recipe because it’s all in one dish—no fussing with multiple pans or layers. Just slice those Yukon Golds, toss them in with the cream and wine, and let the oven do the work. Honestly, the only real effort is peeling the potatoes, and that’s worth it for that golden, bubbly finish.
- Wine-Infused Richness: That splash of white wine and vinegar? It’s the secret weapon—brightens the cream without tasting like booze, and the acidity cuts through the richness just enough to keep every bite balanced. The creamy sauce clings to the potatoes like a hug, but the vinegar keeps it from feeling heavy. (Yes, even on a Tuesday night.)
- Weeknight Crowd-Pleaser: Between us, this is my go-to for game day, family dinners, or when my college-aged kids show up hungry. It reheats beautifully—just a quick zap in the microwave or a few minutes in the oven—and no one ever asks for leftovers twice. Not the prettiest, but the taste makes up for it every time.
Step-by-step instructions for ruth's chris potatoes au gratin copycat recipe
Here's how to recreate the signature restaurant dish with perfectly crispy crowns and ultra-creamy layers.
Prepare the Potato Layers with Vinegar Kiss
Preheat your oven to 375°F. Peel the 3 lb Yukon Gold potatoes and slice them paper-thin using a mandoline or sharp knife. Soak the slices in cold water for 10 minutes to remove excess starch, then drain thoroughly and pat dry with paper towels.
In a large bowl, toss the potato slices with 2 tbsp white wine vinegar and 1.5 tsp salt. This acid treatment creates the signature tang and helps develop that signature crispy crown. Let them sit for 10 minutes while you prepare the sauce. The vinegar will draw out moisture, which you'll need to evaporate during baking for maximum crispiness.
Make the Ultra-Creamy Béchamel Sauce
In a large saucepan, melt 0.75 cup unsalted butter over medium heat. Once foaming, whisk in 0.5 cup all-purpose flour to form a roux. Cook for 2-3 minutes until golden but not browned, stirring constantly to prevent burning.
Gradually whisk in 2 cups heavy cream and 1 cup whole milk, adding them slowly to avoid lumps. Bring to a gentle simmer and cook for 5-7 minutes until thickened enough to coat the back of a spoon. Remove from heat and stir in 0.5 cup white wine, 2 cups Gruyère cheese, 1 cup sharp white cheddar, 4 minced garlic cloves, 0.5 tsp black pepper, and 0.25 tsp nutmeg. The sauce should be velvety smooth with no graininess.
Assemble the Gratin with Perfect Layering
Lightly grease a 9x13-inch baking dish with 2 tbsp bacon fat. Spread ⅓ of the potato slices evenly in the bottom, slightly overlapping. Pour ⅓ of the cheese sauce over the potatoes, then sprinkle with ⅓ of the panko breadcrumbs. Repeat this layering process twice more, ending with the final layer of potatoes.
Press down gently on the top layer to ensure good contact between all components. This compression helps create the signature crispy crown while maintaining creamy layers throughout. The panko on top will develop a beautiful golden crust during baking.
Bake to Golden Perfection with Crispy Crown
Cover the baking dish tightly with aluminum foil and bake for 45 minutes. Remove the foil and bake uncovered for an additional 15-20 minutes until the top is deep golden brown and the edges are crispy. The center should still be slightly jiggly when gently shaken.
For the ultimate crispy crown, broil for 1-2 minutes at the very end, watching closely to prevent burning. The dish is done when the top is golden and the internal temperature reaches 175°F when measured in the center. Let rest for 10 minutes before serving to allow the layers to set slightly and the flavors to meld.
Pro Tips For Making Ruth'S Chris Potatoes Au Gratin Copycat
- SOAK THE POTATOES: Toss peeled Yukon Golds in cold water for 10 minutes before slicing—keeps them from oxidizing and turning brown in the cream sauce. (Yes, even if you’re impatient like me, this makes a real difference.)
- LOW AND SLOW BAKING: After browning the potatoes, cover with foil and bake at 350°F for the first 45 minutes—this builds flavor without burning. I learned this the hard way when my first batch turned into a sad, overcooked mess.
- SAVE THE WINE VINEGAR: Mix the white wine vinegar into the cream last—after the sauce has simmered and thickened. Adding it early makes the sauce taste harsh and unbalanced. (Your future self will thank you.)
- STIR THE CREAM MIX: Whisk the heavy cream, milk, and wine together before adding it to the potatoes. This prevents lumps and ensures a silky texture. I skip this when I’m lazy, but the dish is noticeably better when I don’t.
Troubleshooting perfect results
Potatoes Too Watery
If your potatoes release too much moisture during baking, the result will be soggy instead of crispy. This happens when you skip the 10-minute soak in cold water or don’t pat them dry thoroughly.
I always double-check by pressing a paper towel against the drained potatoes—if it comes away damp, I pat them again. For extra insurance, spread them in a single layer on a baking sheet before assembling to evaporate any remaining moisture. 💧
Sauce Too Thin or Grainy
A thin or grainy sauce ruins the creamy texture. The key is patience when making the roux—cook it until it’s a rich, golden color but not browned. If your sauce separates, whisk in 1 tbsp cold butter and 1 tbsp heavy cream to re-emulsify.
For a smoother finish, strain the sauce through a fine-mesh sieve before adding cheese. I’ve found that European-style Gruyère from Murray’s Cheese melts more smoothly than pre-shredded varieties.
Top Not Crispy Enough
Achieving that signature crispy crown requires proper timing and technique. If your top stays soft, try broiling for 1-2 minutes at the end (watch closely to avoid burning).
Another trick is to toast the panko in bacon fat before adding it to the top layer—this gives it a head start on crispiness. For extra insurance, sprinkle the top with 1 tbsp grated Parmesan before baking, as its lower moisture content helps promote browning. 🔥
Cheese Not Melting Properly
Pre-shredded cheese contains anti-caking agents that prevent proper melting. Always use freshly grated cheese, and avoid overmixing it into the sauce—just stir until combined. If your cheese looks grainy, melt it first in a double boiler, then whisk it into the warm sauce.
For extra insurance, I like to sprinkle the cheese directly between layers rather than mixing it all into the sauce. This creates pockets of melted cheese that enhance the creamy texture throughout.
Uneven Baking or Raw Center
Uneven baking often happens when the dish isn’t hot enough in the oven or the center isn’t properly sealed. Make sure your oven is fully preheated to 375°F before baking.
If the center stays raw, extend the uncovered baking time by 5-10 minutes and check the internal temperature with a thermometer—it should reach 175°F. For extra insurance, press the top layer down firmly before baking to ensure even contact between all components.
A gentle shake of the dish should reveal slight jiggle in the center when done.
Vinegar Overpowering Flavor
The vinegar is essential for that signature tang, but too much can make the dish taste harsh. Stick to the 2 tbsp white wine vinegar measurement and let the potatoes sit for exactly 10 minutes before draining.
If you’re concerned about the flavor, balance it with an extra pinch of salt and a splash of white wine in the sauce. The vinegar should enhance, not dominate—the goal is a bright, crispy crown, not a sour one. 🍷
Nutrition facts
Frequently asked questions
Can I use regular potatoes instead of Yukon Golds?
Yukon Gold potatoes are ideal because their waxy texture holds up beautifully to thin slicing and baking without turning mushy. However, you can substitute with Russet potatoes if needed—just be sure to slice them slightly thicker (1/4-inch) to prevent falling apart. Red potatoes work too, but they'll be creamier rather than fluffy.
What's the secret to getting that perfect crispy top?
The crispy crown comes from three key steps: vinegar treatment (draws out moisture), panko topping (toasted in bacon fat), and uncovered baking at the end. For extra insurance, broil for 1-2 minutes at the very end while watching closely—this creates that signature golden crust while keeping the interior creamy.
Can I make this ahead of time?
Assemble the dish (without baking) and refrigerate for up to 24 hours before baking. For leftovers, reheat covered with foil at 350°F for 15 minutes to restore creaminess. The flavors actually deepen overnight, making it perfect for meal prep. Just add 5-10 extra minutes to baking time if frozen.
Why does the recipe call for white wine vinegar?
The white wine vinegar creates that signature tangy brightness that cuts through the richness. It also helps develop the crispy crown by drawing out moisture from the potatoes. If you don't have it, apple cider vinegar works in a pinch, but white wine vinegar gives the most authentic flavor. Just use exactly 2 tbsp—too much makes it harsh!
What's the best cheese substitute if I can't find Gruyère?
For the closest flavor, use Swiss cheese at half the amount (1 cup) combined with extra sharp cheddar. If you're completely out of options, fontina or Emmental work in a pinch, though they won't be identical. The key is to use freshly grated cheese—pre-shredded contains anti-caking agents that prevent proper melting and create a grainy texture.