Grilled Prime Rib & Horseradish Cream Sauce

Introduction

There’s something primal and incredibly satisfying about the scent of searing beef mingling with wood smoke on a crisp evening. This Grilled Prime Rib is the ultimate centerpiece for celebration, offering a salty, peppercorn-crusted exterior that yields to a buttery, melt-in-your-mouth center. It’s the kind of dish that anchors a holiday gathering, sparking conversation and memories long before the first bite is even taken.

Why It’s a Showstopper

Cooking this roast on the Arteflame is a game-changer. The circular cooktop allows for an intense initial sear followed by gentle, indirect heat, ensuring the meat stays incredibly juicy. Paired with a zesty, homemade Horseradish Cream Sauce, the sharp tang perfectly balances the rich marbling of the ribeye, making every mouthful a luxurious experience that feels restaurant-quality but is achievable in your own backyard.

Kitchen Wisdom

• Bring to Temp: Let your roast sit at room temperature for at least an hour before grilling to ensure even cooking throughout.
• Rest is Best: Allow the meat to rest for a full 20 minutes after grilling. This lets the juices redistribute so the meat stays tender when sliced rather than spilling onto the board.
• Thermometer is Key: Don't guess! Use a digital probe to pull the meat exactly at 125°F for a perfect medium-rare finish.

Make It Your Own

If you prefer a tangier, lighter sauce, you can easily swap the sour cream for Greek yogurt. For those watching their sodium intake, doubling down on fresh herbs like thyme and rosemary in the rub allows you to use less salt while still delivering a massive flavor punch.

Ingredients

The Prime Rib Roast

• 1 (4 to 6 lb) Bone-in Prime Rib Roast (standing rib roast)
• ¼ cup Extra Virgin Olive Oil
• 3 tbsp Coarse Sea Salt (or Kosher salt)
• 2 tbsp Freshly Cracked Black Pepper
• 2 tbsp Fresh Rosemary, finely chopped
• 2 tbsp Fresh Thyme, finely chopped
• 4 cloves Garlic, minced

The Horseradish Cream Sauce

• 1 cup Sour Cream (or Crème Fraîche for a richer texture)
• ¼ cup Prepared Horseradish (drained)
• 1 tbsp Dijon Mustard
• 1 tbsp Mayonnaise
• 1 tsp Worcestershire Sauce
• 1 tbsp Fresh Chives, chopped
• 1 tsp Fresh Lemon Juice
• Salt and Freshly Ground Black Pepper to taste

Instructions

Step 1: Prep and Season the Meat

1. Remove the prime rib from the refrigerator at least one hour before cooking to allow it to reach room temperature. This is crucial for even roasting.
2. In a small bowl, combine the olive oil, minced garlic, chopped rosemary, thyme, coarse salt, and cracked black pepper to form a wet rub.
3. Pat the roast dry with paper towels. Generously massage the herb and spice mixture over the entire surface of the meat, ensuring every nook is coated for maximum flavor penetration.

Step 2: Fire Up the Arteflame

1. Build a medium-sized fire in the center of your Arteflame grill. You want to establish a solid bed of coals that generates consistent heat.
2. Allow the flat steel cooktop (plancha) to heat up. You are looking for a very hot center for searing and a moderate temperature zone further out for roasting.

Step 3: The Reverse Sear Strategy

1. Place the prime rib directly on the center grill grate (directly over the fire) to sear. Sear every side for 2–3 minutes until a deep, mahogany crust forms. Do not rush this step; the crust is where the flavor lives.
2. Once seared, move the roast onto the flat steel cooktop, positioning it away from the direct flame but close enough to maintain a steady roasting temperature.

Step 4: Roast to Perfection

1. Roast the meat, rotating it occasionally to ensure even cooking on all sides. You are aiming for an internal temperature of 125°F for medium-rare or 135°F for medium.
2. Use an instant-read meat thermometer inserted into the thickest part of the roast (away from the bone) to check the temperature regularly.

Step 5: Prepare the Sauce and Rest

1. While the beef is roasting, whisk together the sour cream, horseradish, Dijon mustard, mayonnaise, Worcestershire sauce, lemon juice, and chives in a bowl. Season with salt and pepper to taste. Refrigerate until serving.
2. Once the beef reaches your target temperature, remove it from the grill. Place it on a cutting board and tent loosely with foil. Let it rest for 20 to 30 minutes.
3. Slice the roast against the grain into thick steaks and serve immediately with a dollop of the cool horseradish cream sauce.

Tips

Achieving the perfect grilled prime rib requires patience and attention to detail. The contrast between the cool, zesty sauce and the hot, savory beef is the hallmark of this dish. Here are a few expert tips to ensure your roast is flawless.

• Carryover Cooking: Remember that the internal temperature will rise about 5–10 degrees while the meat rests. Pull the meat off the grill slightly before it hits your ideal doneness.
• Bone-in Benefits: Keep the bones attached during cooking. They act as a natural heat shield, preventing the meat from drying out, and they add incredible flavor to the juices.
• Wood Selection: Use hardwoods like oak, hickory, or cherry for your fire. These woods impart a subtle, sweet smokiness that complements the beef without overpowering it like mesquite might.

Variations

While the classic herb crust is timeless, you can easily adapt this recipe to suit different palates or seasonal themes. Experimenting with the rub or the sauce base can completely transform the meal.

• Coffee-Crusted Roast: Add 2 tablespoons of finely ground espresso to your dry rub for a deep, earthy flavor that pairs beautifully with the rich fat of the ribeye.
• Spicy Kick: Mix a teaspoon of cayenne pepper or smoked paprika into the horseradish sauce for a smoky heat that cuts through the creaminess.
• Garlic Butter Baste: During the last 10 minutes of cooking on the plancha, baste the roast with melted garlic and herb butter for a glossy, decadent finish.

Best pairings

A dish as commanding as grilled prime rib needs sides that can stand up to its richness without competing for attention. Stick to classics that benefit from the Arteflame’s cooking surface to keep your meal cohesive.

• Grilled Asparagus: Toss fresh asparagus in olive oil and lemon zest, then grill them quickly on the flat cooktop while the meat rests. The char adds a nice crunch.
• Smashed Potatoes: Par-boil small potatoes, smash them flat, and crisp them up on the Arteflame griddle with duck fat or butter until golden brown.
• Bold Red Wine: Pour a full-bodied Cabernet Sauvignon or a tannic Syrah. The acidity and tannins in these wines cleanse the palate after each rich, fatty bite of beef.

Conclusion

This Grilled Prime Rib with Horseradish Cream Sauce is more than just a dinner; it is an experience that celebrates the art of outdoor cooking. By utilizing the unique heat zones of the Arteflame, you achieve a textural contrast—crispy bark and tender interior—that standard ovens simply cannot replicate. It is a meal designed to be shared, creating a sense of warmth and abundance at your table.

Whether it’s a holiday feast or a special weekend treat, mastering this roast adds a legendary recipe to your culinary repertoire. Gather your friends, pour the wine, and enjoy the satisfaction of serving a perfectly executed prime rib that everyone will be talking about for years to come.