Ruth Chris Mashed Potatoes Recipe: Steakhouse Creaminess at Home

Recreating Ruth’s Chris mashed potatoes at home delivers that signature steakhouse creaminess without the restaurant price tag. The secret lies in the perfect balance of high-fat dairy and precise whipping technique—no lumps, just velvety smooth texture in every bite.

This recipe uses simple ingredients—Yukon Gold potatoes, heavy cream, and real butter—transformed through careful boiling, draining, and whipping. The result is rich, decadent mashed potatoes that pair perfectly with grilled steak or holiday roasts. Follow these steps for professional-quality results every time.

Ingredients for Ruth Chris Mashed Potatoes

Five simple ingredients—plus professional techniques—yield Ruth’s Chris-level decadence with every velvety bite.

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The potatoes are non-negotiable: Yukon Golds deliver the ideal starch-to-moisture ratio for that signature creaminess. Optimal size is 1-inch cubes—uniformity ensures even cooking. Diamond Crystal kosher salt is preferred for its clean flavor and precise measurement; table salt will over-season. For the dairy, full-fat heavy cream and butter are mandatory—reduced-fat versions compromise texture. Sour cream adds subtle tang; Daisy or Breakstone’s brands are reliable for consistency.

No Yukon Golds? Russet potatoes at a 1:1 ratio work but require additional butter for moisture. Substitute half-and-half for heavy cream in a pinch, though texture will be slightly lighter. Vegan adaptation? Full-fat coconut cream and vegan butter (Miyoko’s brand) mimic the richness, but expect a faint coconut note. Garlic can be omitted for purists, but its aromatic depth complements steakhouse pairings. Always use freshly ground black pepper—pre-ground lacks potency.

Prepare components just before assembly: potatoes oxidize when cut, cream separates if warmed prematurely, and butter softens too quickly at room temperature. The mashed potatoes hold at 170°F for up to 2 hours in a heatproof bowl over simmering water. Rewhip with 2 tbsp warm milk before serving if needed. Leftovers (rare though they may be) reheat best with gentle steam—microwaving risks gumminess.

Step-by-Step Instructions for Steakhouse-Style Mashed Potatoes

Mastering this technique requires precision at each stage—from potato preparation to final seasoning.

Step 1: Prepare and Rinse the Potatoes

Begin by peeling the 2.5 lb Yukon Gold Potatoes and cutting them into uniform 1-inch cubes. This consistent size ensures even cooking throughout. Immediately transfer the cubed potatoes to a large bowl of cold water to prevent browning.

Drain the potatoes and rinse them thoroughly with the 0.5 cup Ice Water in a colander. This critical step removes excess starch, which would otherwise create a gluey texture in your final dish. Shake the colander vigorously to eliminate all surface moisture before proceeding.

Step 2: Cook the Potatoes to Perfect Tenderness

Place the rinsed potatoes in a large pot and cover with cold water by 2 inches. Add 1.5 tsp Kosher Salt to the water—this seasons the potatoes from within as they cook. Bring to a gentle boil over medium-high heat, then reduce to medium and cook for 15-18 minutes until the potatoes are fork-tender.

Test doneness by piercing several cubes with a fork—they should yield easily without crumbling apart. Immediately drain the potatoes in the colander and return them to the warm pot. Allow them to sit uncovered for 2 minutes to evaporate any remaining surface moisture.

Step 3: Heat the Dairy Components

While the potatoes cook, combine the 1.5 cups Heavy Cream and 0.5 cup Whole Milk in a small saucepan. Warm the mixture over medium heat until it reaches 180°F—you’ll see small bubbles forming around the edges of the pan. Remove from heat immediately to prevent boiling.

In a separate microwave-safe bowl, heat the 1 cup Unsalted Butter (cut into 1-tbsp pieces) in 20-second intervals, stirring between each, until completely melted but not hot. The ideal temperature for both dairy components should be 160-170°F when combined—warm enough to incorporate smoothly but not so hot it makes the potatoes gummy.

Step 4: Mash and Incorporate the Ingredients

Using a potato ricer or food mill, process the warm potatoes directly into the pot you cooked them in. This tool creates the smoothest texture by eliminating lumps. If you don’t have one, a potato masher will work—just be thorough.

Gradually add the warmed cream mixture while stirring with a wooden spoon, followed by the melted butter. Fold in the 0.25 cup Sour Cream, 0.5 tsp Freshly Ground Black Pepper, and 2 cloves Garlic Cloves (minced) if using. Continue folding until all ingredients are fully incorporated and the mixture achieves a velvety consistency.

Step 5: Adjust Seasoning and Finish

Taste the potatoes and adjust the seasoning if needed—they should be rich but not overly salty. For optimal texture, the mashed potatoes should hold their shape when scooped but still have a slight sheen from the butter. Transfer to a serving bowl and create a small well in the center.

Melt 2 tbsp of the reserved butter and pour it into the well. Garnish with the 2 tbsp Chives and serve immediately while still steaming. The residual heat will continue to develop the flavors as they rest briefly before serving.

Best Sauces and Condiments for This ruth chris mashed potatoes

Classic Steakhouse Gravy

The ultimate pairing for these mashed potatoes is a rich, peppery steakhouse gravy. I make mine by deglazing a hot skillet with ½ cup red wine after cooking steak, then adding 2 cups beef stock and reducing by half. Whisk in 2 tbsp cold butter at the end for silkiness. 💫

Garlic-Herb Butter

For a simple yet luxurious topping, blend ½ cup softened butter with 1 tbsp minced garlic, 1 tbsp chopped parsley, and ½ tsp lemon zest. Roll into a log, chill, then slice over warm potatoes. The bright flavors cut through the richness beautifully.

Truffle Oil Drizzle

A few drops of white truffle oil (I use Urbani brand) transform these potatoes into gourmet restaurant fare. Drizzle just ½ tsp over each serving—its potent aroma pairs perfectly with the creamy base. Avoid overdoing it to preserve the delicate balance.

Cheese Sauce Swirl

Create a quick cheddar sauce by melting 1 cup sharp cheddar into ½ cup warm heavy cream with 1 tsp Dijon mustard. Swirl this into the potatoes before serving for a loaded baked potato effect. The tangy cheese complements the buttery base.

Caramelized Onion Topping

Slow-cook 2 large yellow onions in 3 tbsp butter for 45 minutes until golden and sweet. Spoon these over the potatoes for textural contrast. The natural sweetness balances the savory notes in every bite.

Spicy Sriracha Aioli

For heat lovers, whisk ¼ cup mayo, 1 tbsp sriracha, and 1 tsp lime juice. Dollop this vibrant aioli over the potatoes—its creamy heat cuts through the richness. Adjust sriracha quantity to taste preference. 🌶️

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