There’s nothing more show-stopping for the holidays or a special gathering than a beautifully cooked Prime Rib Roast. This classic recipe uses a chef’s restaurant method for a foolproof, juicy, and flavorful result every single time. With a simple marinade, an overnight rest, and a careful oven-roasting technique, you’ll get that gorgeous crust and melt-in-your-mouth beef everyone craves.

Why This Is the Only Prime Rib Roast Recipe You Need
- Time-Tested Family Technique: Passed down from a hotel restaurant chef, perfected for the home cook.
- Foolproof for Any Size: Ingredient measurements and cooking times per pound—just scale as needed.
- Holiday Centerpiece: Rich, tender, and perfect for a crowd. Leftovers make the best sandwiches.
Prime Rib Roast Ingredients
- Bone-in prime rib roast
- Medium onion
- Kosher or sea salt per pound
- Freshly ground black pepper
- Minced garlic
- Fresh rosemary
- Fresh thyme
- Olive oil


Tip: Use a well-marbled USDA Choice or Prime roast for best flavor.
Step-by-Step Instructions
1. Marinate the Roast
- Rinse the roast and pat it dry with paper towels.
- Place a flat roasting rack inside a roasting pan (or use a bed of onions if no rack).
- Lay sliced onions across the rack and set the roast on top.
- Mix salt, pepper, garlic, herbs, and olive oil in a bowl to form a paste. Rub this mixture generously all over the roast.
- Cover with plastic wrap and marinate in the fridge overnight (at least 8 hours).


Don’t skip this step—the overnight marinade gives the fat cap and outer layer amazing flavor!
2. Bring to Room Temperature
- Remove the prime rib roast from the fridge about 2 hours before roasting to take off the chill.
3. Roasting
- Preheat oven to 450°F (230°C).
- Place the roast on a lower oven rack (to prevent the top from browning too fast).
- Roast for 30 minutes.
- Add ½ cup water to the bottom of the pan to keep onions from burning and provide moisture.
- Rotate roast 180°, roast another 30 minutes, adding more water if needed.
Goal: Get the outside browned and aromatic without burning the fat or onions.
4. Finish Low and Slow
- Reduce oven temp to 350°F (175°C).
- Continue roasting for 90–120 minutes (about 15 minutes per pound total roasting time), basting every 30 minutes and adding hot water ½ cup at a time if the pan dries out.
- Use a meat thermometer! Pull the roast at 120–125°F internal temp for medium rare (the roast will rise 5–7 degrees as it rests). For rare, pull at 115–120°F.
If the top starts to char, tent loosely with foil but leave the sides exposed.
5. Rest & Serve
- Rest the roast, lightly tented with foil, for 20 minutes before carving.
- Strain pan juices, skim the fat, and serve as au jus on the side. Add a little water if too salty.
- Slice and serve immediately.
Recipe Tips & Notes
- Small Roasts (6 lbs or less): After browning at 450°F for 40 minutes, reduce to 325°F and continue per the 15-minutes-per-pound rule.
- Boneless Roasts: Cook a bit faster—check temperature early.
- Cooking for a Crowd: Two smaller roasts cook more evenly than one massive one.
- Leftovers: Sliced prime rib makes stellar sandwiches!

FAQs
A little red wine is great for flavor, but don’t skip the water—you need moisture so the pan drippings and onions don’t burn.
Plan about 1 pound (raw weight) per person.
A meat thermometer is essential. Medium rare is 125°F (resting to 130–132°F).
Stick with regular oven (not convection) for slow, even roasting.
Prime Rib Roast
- Total Time: 15 hours
- Yield: Variable (1 lb per person)
Description
This Prime Rib Roast recipe brings restaurant-quality flavor to your kitchen with a simple marinade, a slow-roast method, and juicy, melt-in-your-mouth beef perfect for holidays or special gatherings.
Ingredients
- ⅓ medium onion, sliced (per pound of roast)
- 1 tsp kosher salt (per pound)
- ½ tsp black pepper (per pound)
- 1 tsp minced garlic (per pound)
- 1 tsp fresh rosemary (per pound)
- 1 tsp fresh thyme (per pound)
- ½ tsp olive oil (per pound)
Instructions
- Rinse, pat dry, and marinate the roast overnight with seasoning and herbs.
- Bring to room temp 2 hours before roasting.
- Preheat oven to 450°F. Roast for 30 minutes, add ½ cup water, rotate roast, and roast another 30 minutes.
- Reduce oven to 350°F. Continue roasting 90–120 minutes (about 15 min per pound), basting every 30 minutes. Pull roast at 120–125°F internal temp for medium rare.
- Rest for 20 minutes tented with foil. Slice and serve with strained au jus.
Notes
For best results, use a meat thermometer and allow roast to rest before carving. Adjust roasting time for smaller or boneless cuts. Leftovers make great sandwiches!
- Prep Time: 12 hours
- Cook Time: 3 hours
- Category: Main Course
- Method: Oven Roasted
- Cuisine: American
Nutrition
- Serving Size: 1 portion
- Calories: 580
- Sugar: 1g
- Sodium: 700mg
- Fat: 45g
- Saturated Fat: 18g
- Unsaturated Fat: 22g
- Trans Fat: 1g
- Carbohydrates: 2g
- Fiber: 0g
- Protein: 44g
- Cholesterol: 140mg



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