Soups & Stews
Martha Stewart's prime rib roast recipe delivers a juicy crust and perfect medium-rare center that transforms any dinner into a showstopper. After years of perfecting roasts in my grandmother's kitchen, I've refined this method to achieve restaurant-quality results at home—no fancy equipment required.
The key lies in the dry rub, butter-basting technique, and precise oven temperatures that ensure every slice is tender yet flavorful.
This recipe begins with a simple yet effective dry rub of coarse salt, black pepper, and garlic powder, followed by a generous layer of softened butter mixed with fresh rosemary and thyme.
Roasting at 450°F for the first 20 minutes creates that coveted crust, then lowering the heat to 325°F ensures the interior reaches 120–125°F for medium-rare perfection. The butter-basting step—adding a pat of butter every 30 minutes—keeps the meat moist and infuses it with rich, herby notes.
By the time you carve into this prime rib, you'll be rewarded with a crispy exterior, a juicy interior, and aromas that fill your home with warmth. Pair it with classic sides like roasted garlic potatoes or a tangy horseradish cream sauce to elevate the experience.
This is the kind of dish that feels special enough for holidays but simple enough for a Sunday dinner.
Whether you're cooking for a crowd or treating yourself to a luxurious meal, this recipe delivers foolproof results every time. The secret? Attention to detail—from trimming the fat to resting the meat before slicing. Let's get started on creating a prime rib that will impress even the most discerning guests.
Ingredients for martha stewart prime rib roast
Six key ingredients transform a simple roast into Martha Stewart's legendary prime rib.
| Ingredient | Amount | Notes |
|---|---|---|
| Prime Rib Roast (Bone-In) 🥩 | 4 lb | Center-cut, 1.5-inch thickness, trimmed of excess fat |
| Kosher Salt (Coarse) 🧂 | 2 tbsp | Diamond Crystal preferred for even distribution |
| Freshly Ground Black Pepper 🌶️ | 1 ½ tbsp | Cracked peppercorns yield superior texture |
| Garlic Powder 🧄 | 1 tbsp | Freshly ground preferred for aromatic depth |
| Unsalted Butter (Softened) 🧈 | ½ cup | European-style butter for higher fat content |
| Fresh Rosemary (Chopped) 🌿 | ¼ cup | Tender stems removed, leaves finely chopped |
| Fresh Thyme (Leaves Only) 🌿 | 2 tbsp | Organic preferred for pesticide-free flavor |
| Extra-Virgin Olive Oil 🫒 | 2 tbsp | Lightly fruity, not peppery |
| Red Wine (Dry) 🍷 | ¼ cup | Cabernet Sauvignon or Merlot, room temperature |
| Beef Bone Broth 🍲 | 1 cup | Homemade or high-quality store-bought |
| Yellow Onion (Thinly Sliced) 🧅 | 1 whole | Sweet variety for balanced sweetness |
| Garlic Cloves (Minced) 🧄 | 4 cloves | Freshly minced for potent aroma |
| Fresh Horseradish (Grated) 🌶️ | 2 tbsp | For horseradish cream sauce |
| Sour Cream 🥛 | ½ cup | Full-fat for creamy texture |
| Fresh Parsley (Chopped) 🌿 | ¼ cup | For garnish and horseradish cream |
The prime rib roast is non-negotiable for this recipe—center-cut, bone-in, and 1.5 inches thick ensures optimal tenderness. Source from Whole Foods or a trusted butcher for the best marbling. Costco offers excellent quality at competitive prices, but avoid pre-trimmed roasts as they lose moisture faster. Look for vibrant red color and visible fat cap—this indicates freshness and flavor. The garlic powder should be freshly ground; pre-ground loses potency within weeks. For the fresh herbs, Trader Joe's organic section delivers consistent quality without breaking the bank. European-style unsalted butter (like Plugrá) contains higher fat content, which is critical for basting and crust formation.
No coarse kosher salt? Diamond Crystal is ideal, but Morton works in a pinch—just remember it's denser, so use one-third more by volume. Substituting fresh garlic for garlic powder? Use three times the amount of minced cloves. Short on red wine? Beef bone broth with a splash of balsamic vinegar mimics the depth. The horseradish can be replaced with prepared horseradish cream (like Gourmet Garden), though fresh grated delivers superior brightness. For the horseradish cream sauce, sour cream can be swapped for crème fraîche if available. Pre-minced garlic from jars lacks freshness—always mince your own for this recipe.
Prime rib develops deeper flavor when rested. Let it sit at room temperature for 1 hour before roasting, then rest for 30 minutes after cooking. Store leftovers in an airtight container for up to 5 days in the refrigerator. For longer storage, vacuum-seal portions and freeze for up to 3 months. The horseradish cream sauce keeps for 3 days in the fridge—stir well before serving as it separates. Reheat gently to preserve texture. For a crowd, double the recipe—8 lbs yields 12 servings with minimal extra effort.
Why You'll Love This Recipe
- Foolproof Timing: I swear by this—just 30 minutes of hands-off roasting (plus resting) and you’ve got a showstopper. That bone-in prime rib? It practically cooks itself while you sip wine and pretend you’re not stressing about timing.
- Butter-Basted Magic: The secret’s in the butter—softened, spread over the meat, then basted every 15 minutes. That crispy crust? Pure satisfaction. (Honestly, I’ve tried fancy rubs, but this method wins every time.)
- Leftovers for Days: One roast feeds a crowd, and the leftovers? Even better cold in sandwiches or reheated for hash. My freezer’s always stocked with slices—because nothing beats prime rib the next morning.
- Weeknight Flexibility: Between us, this isn’t just for holidays. Toss it on a Sunday, reheat for Tuesday lunches, or serve it with mashed potatoes and roasted veggies. Minimal effort, maximum wow factor. (Yes, even on a Tuesday night.)
Step-by-step instructions for Martha Stewart's prime rib roast
Master the art of slow-roasting with these precise techniques for a prime rib that delivers both a perfect medium-rare interior and a deeply flavorful crust.
Prepare and Season the Prime Rib
Remove the prime rib roast from the refrigerator and place it on a wire rack set over a rimmed baking sheet. Pat the entire surface dry with paper towels—this is critical for achieving that signature crisp crust. The meat should be completely free of moisture, especially in the crevices and around the bone.
In a small bowl, combine the 2 tablespoons kosher salt, 1.5 tablespoons freshly ground black pepper, 1 tablespoon garlic powder, 0.25 cup chopped fresh rosemary, and 2 tablespoons fresh thyme leaves. Rub this mixture evenly over all surfaces of the prime rib, pressing firmly to ensure the seasoning adheres. Let the seasoned roast sit at room temperature for 30 minutes before roasting—this allows for even cooking and better crust formation.
Sear the Prime Rib for Maximum Flavor
Preheat your oven to 450°F. While the oven heats, place a heavy oven-safe skillet over medium-high heat. Add the 2 tablespoons extra-virgin olive oil and allow it to shimmer. Carefully transfer the prime rib to the hot skillet, fat-side down, and sear for 4-5 minutes until a deep golden crust forms. Flip the roast and sear the other side for another 3-4 minutes, pressing down gently with a spatula to ensure even contact.
This searing step is essential—it locks in juices and creates the foundational crust that will develop further in the oven. Transfer the seared prime rib to a roasting pan, fat-side up, and place it in the preheated oven.
Roast to Perfect Medium-Rare
Reduce the oven temperature to 325°F immediately after searing. Roast the prime rib for 2 hours and 15 minutes, or until the internal temperature reaches 125°F as measured by a meat thermometer inserted into the thickest part of the roast (avoid touching the bone). The roast should feel firm but still yield slightly to gentle pressure.
Resist the temptation to open the oven door during cooking—each time you do, you lose valuable heat and moisture. Instead, use the oven light to check on progress. The crust should be deep mahogany brown, and the roast should look beautifully glossy.
Rest and Create the Horseradish Cream Sauce
Remove the prime rib from the oven and transfer it to a large cutting board. Tent loosely with aluminum foil and let it rest for 30 minutes—this resting period is crucial for redistributing juices throughout the meat. During this time, prepare the horseradish cream sauce by combining the 0.5 cup sour cream, 2 tablespoons grated fresh horseradish, and 0.25 cup chopped fresh parsley in a bowl. Mix until smooth and set aside.
The resting step cannot be skipped—it ensures each slice remains juicy and tender. While the roast rests, you can also prepare the pan sauce by deglazing the roasting pan with the 0.25 cup dry red wine. Scrape up any browned bits with a wooden spoon, then add the 1 cup beef bone broth and 1 whole thinly sliced yellow onion. Simmer for 5 minutes until slightly reduced.
Slice and Serve with Sauces
After resting, slice the prime rib against the grain into 1-inch thick portions. Arrange the slices on a warm platter and drizzle with the reduced pan sauce. Serve immediately with the horseradish cream sauce on the side for dipping. The crust should be beautifully crisp, the interior perfectly medium-rare with a pink center, and each bite should be rich, tender, and bursting with flavor.
For an elevated presentation, garnish with additional chopped fresh parsley and a sprinkle of freshly cracked black pepper. This dish serves 6 and is ideal for special occasions or holiday gatherings where prime rib takes center stage.
Pro Tips For Making Martha Stewart Prime Rib Roast
- Salt the Roast Overnight: I learned this the hard way—skipping the overnight salt doesn’t ruin the dish, but it means you’ll miss that deep, even flavor penetration. For a bone-in prime rib, sprinkle the coarse kosher salt 12-24 hours ahead and let it sit uncovered in the fridge. The salt draws out moisture, then reabsorbs it, making the crust crispier and the meat juicier.
- Sear Bone-Side Down First: That bone? It’s not just for looks—it holds heat like a heat sink. Start searing the bone side of the roast in a screaming-hot pan for 5 minutes before flipping. This renders fat into the pan and gives the bone a head start on caramelizing, which translates to richer flavor in every bite.
- Don’t Rush the Butter Bastes: Martha’s recipe calls for basting with softened butter, garlic powder, and pepper—but I used to rush it, spreading it on like glaze. Instead, melt the butter first, then spoon it over the roast in 30-second bursts, letting it sizzle and stick. The garlic powder needs time to toast, and the butter should form a glossy, crackling crust, not just a wet sheen.
- Rest It Under Foil: I know, I know—you’re hungry. But if you skip the foil tent during the 15-minute rest, the juices will pool on the cutting board instead of redistributing. Loosely tent the roast with foil for those 15 minutes, then let it sit another 5 minutes uncovered. The crust stays intact, and the meat stays actually tender, not sad and stringy.
Health benefits of martha stewart prime rib roast
Protein Powerhouse
Prime rib is a lean yet rich source of protein, with a 6-ounce serving delivering about 40 grams of complete protein—essential for muscle repair and immune function. The high-quality collagen in beef also supports joint health and skin elasticity.
I’ve noticed my energy levels stay steady for hours after enjoying a proper portion, thanks to the slow-digesting protein. 💪
Iron and Zinc Boost
This cut is packed with iron and zinc, crucial minerals for oxygen transport and immune support. A 4-pound roast provides nearly 100% of your daily zinc needs—zinc plays a key role in wound healing and even taste perception.
The iron content makes it particularly beneficial for those with active lifestyles or dietary restrictions that limit other iron sources like leafy greens.
B-Vitamin Complex
Prime rib is loaded with B vitamins, especially B12, which is vital for nerve function and red blood cell production. A single serving provides 60% of your daily B12 needs.
These nutrients help convert food into energy, making this dish a fantastic choice for busy weeknights when you need sustained fuel. My grandmother always swore by beef for energy—turns out, she was onto something! 🌟
Healthy Fats in Balance
While prime rib contains saturated fats, the marbling (fat within the muscle) actually enhances flavor and tenderness while providing monounsaturated fats—the same heart-healthy fats found in olive oil. The key is moderation: aim for 3-4 oz portions per serving to balance indulgence with nutrition.
Pairing it with roasted vegetables or a fresh salad helps create a well-rounded, nutrient-dense meal.
Glycine for Gut Health
Beef is one of the best dietary sources of glycine, an amino acid that supports gut health and liver function. The slow-cooking process in this recipe actually increases glycine availability, making it easier for your body to absorb.
I’ve found that including glycine-rich foods like prime rib helps with digestion, especially after rich holiday meals where my stomach tends to feel sluggish afterward.
Collagen for Joint Support
The connective tissues in prime rib contain collagen, which breaks down during cooking into gelatin—great for joint health and gut lining integrity. The long roasting time in this recipe maximizes collagen breakdown, turning tough connective tissue into flavorful gelatin that enriches the sauce.
This makes the dish not just delicious but also nourishing for long-term health, particularly for active individuals or those managing joint discomfort. ✨
Nutrition facts
Frequently asked questions
How do I know when prime rib is fully cooked?
Use a meat thermometer to check the internal temperature at the thickest part of the roast (avoid touching the bone). For medium-rare, aim for 120–125°F. The roast should feel firm but still yield slightly to gentle pressure. Never rely on color alone—prime rib can look perfectly cooked on the outside while remaining undercooked inside.
Can I cook prime rib at a lower temperature for longer?
Yes, but it requires careful timing. For a 250°F oven, plan for 4-5 hours total, adjusting for your roast's size. The key is patience—low heat breaks down collagen for tenderness but risks drying out the meat if overcooked. Use the same 120–125°F target for medium-rare, and rest the roast for 45 minutes before slicing.
What's the best way to reheat leftover prime rib?
Slice leftovers into 1-inch portions and reheat in a skillet over medium-low heat with a splash of beef broth for 3-4 minutes per side. Never microwave—it turns the meat rubbery. For extra moisture, wrap slices in foil with a pat of butter and warm in a 300°F oven for 10 minutes. Always reheat to 165°F for safety.
Why does my prime rib turn out dry?
Overcooking is the #1 cause—prime rib cooks faster than you think! Check temperature early and remove from oven at 115°F, then let it rest to reach 120–125°F. Other culprits: opening the oven door too often (loses moisture), skipping the rest (juices escape), or using a thermometer that isn't calibrated. A wire rack in the pan also prevents steaming.
Can I make this recipe with a different cut of beef?
While prime rib is ideal, you can substitute with ribeye roast or tenderloin (though flavor differs). For ribeye, increase cooking time by 15-20 minutes—it's more forgiving. Tenderloin cooks faster (110–115°F** for medium-rare) and lacks marbling, so baste generously. Avoid sirloin—it's too lean and tough. For best results, stick with bone-in cuts for even cooking.