Ruth’s Chris Lyonnaise Potatoes Recipe: Copycat Steakhouse Creamy Indulgence

Recreating Ruth’s Chris’ signature Lyonnaise potatoes at home is simpler than you’d expect. This copycat version delivers that same creamy indulgence with crispy onions and buttery richness.

My French training taught me the importance of proper caramelization, which transforms these potatoes from ordinary to extraordinary. The key is slow cooking until the onions develop that deep, golden color and sweet flavor.

You’ll end up with tender potatoes coated in a silky sauce, punctuated by those crispy, caramelized onions that make this dish so memorable. It’s the perfect steakhouse side without the restaurant price tag.

Serve alongside your favorite steak for an authentic experience. The flavors are even better when made a day ahead.

Ingredients for Ruth’s Chris Lyonnaise Potatoes

Rich, buttery, and packed with caramelized onions for that steakhouse experience at home.

[recipe_ingredient_scaler]

The onions are everything here. Vidalia or sweet yellow onions caramelize best—look for firm bulbs with dry skins at Whole Foods or your local market. I prefer Yukon Golds for their creamy texture (they hold shape better than russets). The beef stock should be high-quality—Better Than Bouillon is my go-to for depth without the salt overload.

No Yukon Golds? Red potatoes work in a pinch (just don’t overcook). Swap beef stock for chicken or vegetable stock if needed, but the richness won’t be quite the same. Heavy cream can be half-and-half (less decadent) or full-fat coconut milk for a dairy-free version. The Dijon mustard is subtle but essential for balance—don’t skip it (or use yellow mustard).

Best made a day ahead—the flavors meld and the sauce thickens. Stores 3-4 days in the fridge. Reheat gently on the stove with a splash of stock to restore the creamy texture. Freezes for 1 month (thaw in fridge overnight).

Step-by-Step Instructions for Lyonnaise Potatoes

Master this technique for a steakhouse-worthy side with caramelized depth and velvety sauce.

Step 1: Parboil and Slice the Yukon Gold Potatoes

Place the 2 lb Yukon Gold Potatoes in a large pot and cover with cold water by 1 inch. Bring to a boil over high heat, then reduce to medium and simmer for 12-15 minutes until the potatoes are just fork-tender but not fully cooked through.

Drain the potatoes and let them cool slightly for 5 minutes. Peel and slice them into ¼-inch thick rounds. This thickness ensures they hold their shape while absorbing the rich sauce later. Set aside in a large bowl.

Step 2: Caramelize the Yellow Onions

Heat the 2 tbsp Olive Oil in a large, heavy skillet over medium-low heat. Add the 2 whole Yellow Onions, thinly sliced, and cook slowly for 25-30 minutes, stirring occasionally, until they turn a deep, golden caramel brown.

Stir in the 3 cloves Garlic Cloves (minced) during the last 2 minutes of cooking. The onions should melt into a sweet, jammy consistency. Watch carefully toward the end to prevent burning—lower the heat if needed.

Step 3: Build the Creamy Lyonnaise Sauce

In the same skillet, increase heat to medium and add the 2 tbsp All-Purpose Flour. Stir constantly for 1 minute to cook off the raw flour taste. Slowly whisk in the 1 cup Beef Stock until smooth, scraping up any browned bits from the bottom of the pan.

Add the 0.5 cup Unsalted Butter, 0.5 cup Heavy Cream, 1 tbsp Dijon Mustard, 2 tsp Fresh Thyme, 1.5 tsp Kosher Salt, and 0.5 tsp Freshly Ground Black Pepper. Simmer for 3-4 minutes until the sauce thickens enough to coat the back of a spoon.

Step 4: Finish with Potatoes and Serve

Gently fold the sliced potatoes into the sauce, ensuring each piece is well coated. Cook over medium-low heat for 5-7 minutes until the potatoes are fully tender and the sauce has reduced slightly to a creamy, glossy consistency.

Taste and adjust seasoning if needed. The potatoes should be soft but not falling apart, with a luxurious sauce clinging to each slice. Serve immediately while hot—the sauce will thicken slightly as it cools.

Regional Styles of ruths chris lyonnaise potatoes

Classic French Lyonnaise

The traditional French version focuses on slow-cooked onions as the star. I use Vidalia onions for their natural sweetness, cooking them in duck fat instead of butter for a richer depth. The potatoes are parboiled, then finished in the onion mixture with a splash of white wine for acidity. 💛

Ruth’s Chris Style

This steakhouse adaptation amps up the indulgence with a buttery cream sauce and beef stock for depth. The key difference is the addition of Dijon mustard and thyme, which give it that signature Ruth’s Chris flavor. The onions are caramelized until deeply golden.

Southern Comfort Twist

For a Southern take, I add crumbled bacon to the onions and swap beef stock for chicken stock. A pinch of smoked paprika nods to my pitmaster roots. The result is smokier and heartier, perfect alongside a juicy ribeye.

Vegetarian Adaptation

Skip the beef stock and use mushroom stock for umami depth. I also add sautéed mushrooms with the onions for meaty texture. The cream sauce remains the same, but the dish feels lighter without sacrificing richness.

German Influence

Inspired by my travels, this version includes caraway seeds and a splash of apple cider vinegar. The onions are cooked with a bit of sugar to enhance caramelization. It pairs beautifully with pork chops.

Quick Weeknight Version

Use pre-sliced frozen onions to cut caramelization time in half. Baby potatoes eliminate peeling, and I use half-and-half instead of heavy cream. It’s not as decadent but still delivers great flavor for busy nights. ⚡

Frequently Asked Questions