The Classic Christmas Prime Rib is the undisputed centerpiece of any holiday feast. This recipe introduces the “Low-Temp Reverse Sear” method—a technique favored by chefs for delivering a stunning, edge-to-edge perfect pink interior and a shatteringly crisp crust. While it takes time, the actual hands-on work is minimal, making this the most reliable holiday prime rib recipe you will ever use.
This comprehensive guide includes not just the perfect roasting method but also instructions for a rich, scratch-made Au Jus (using beef bones) and a zesty creamy horseradish sauce. By dry-brining the meat with salt ahead of time and roasting at a low temperature, we ensure every slice of the standing rib roast is tender, juicy, and beautifully flavored. Forget the guesswork; rely on this method for a flawless presentation every time.
Table of Contents
Why You’ll Love This Prime Rib
- Flawless Interior: The low-temp reverse sear (roasting low and searing high at the end) guarantees a uniform, pink medium-rare center.
- Rich Homemade Sauces: Includes recipes for both a rich, savory Au Jus made from bones and a tangy creamy horseradish sauce.
- Make-Ahead Strategy: The essential 24-hour dry brine and the option to make the Au Jus ahead streamline your Christmas day cooking.
- Show-Stopping Centerpiece: This classic Christmas Prime Rib is guaranteed to impress your family and friends, elevating any celebration.
Ingredients
For the Prime Rib Roast
- 1 (6 lb) Prime Rib Roast (Bone-In or Boneless)
- 3 Tbsp Kosher Salt (approximately 1% of the meat’s weight)
- 1 Tbsp Coarse Black Pepper
For the Au Jus Sauce (Optional, but Recommended)
- 3 lb Meaty Beef Bones (oxtails or neck bones)
- 3 Tbsp Olive Oil
- 1 Large Onion, quartered
- 2 Large Carrots, roughly chopped
- 3 Celery Ribs, roughly chopped
- 5 Garlic Cloves, peeled and smashed
- 1 Tbsp Tomato Paste
- ½ cup Dry Red Wine (Cabernet Sauvignon or Merlot)
- 6 cups Low-Sodium Beef Stock
- 2 sprigs Fresh Thyme, 1 large Bay Leaf
- 1 tsp Beef Base (such as Better Than Bouillon)
- Salt and Pepper, to taste
For the Horseradish Sauce
- 1 cup Sour Cream (full-fat recommended)
- 5 Tbsp Prepared Horseradish (adjust amount for desired spice level)
- 1 Tbsp Dijon Mustard
- 2 tsp Worcestershire Sauce
- 2 Tbsp Mayonnaise
Instructions (Step-by-Step)
Part 1: Prep and Dry Brine (24 Hours Ahead)
- Dry Brine: Pat the prime rib roast completely dry. Generously rub the entire surface (including the fat cap and bones) with the kosher salt and coarse black pepper.
- Rest: Place the seasoned roast, uncovered, on a wire rack inside a baking sheet. Refrigerate for at least 24 hours(up to 48 hours). This dry brining process ensures a perfect crust.
Part 2: Preparing the Au Jus Broth (Optional, 4 Hours Ahead)
- Brown Bones: In a large pot, heat the olive oil over medium-high heat. Brown the beef bones/oxtails on all sides for 10–12 minutes.
- Sauté Veggies: Add the chopped onions, carrots, celery, and garlic to the pot. Cook for 10 minutes, stirring occasionally. Stir in the tomato paste and cook for 1 minute more.
- Deglaze and Simmer: Pour in the red wine and scrape the bottom of the pot to deglaze the browned bits. Add the beef stock, beef base, thyme, and bay leaf. Bring to a boil, then reduce heat and simmer uncovered for the entire duration of the roast’s cooking time (approx. 3 hours) to intensify the flavor.
Part 3: The Low-Temp Roast and Sear
- Bring to Room Temp: Remove the dry-brined roast from the refrigerator and let it sit at room temperature for 5–6 hours before cooking. This is critical for even cooking.
- Low Roast: Preheat the oven to 250°F (120°C). Place the roast in a roasting pan and insert a meat thermometer into the center. Cook for approximately 3 hours (about 30 minutes per pound for this low temperature) until the internal temperature reaches 120°F for medium-rare.
- Rest and Sear (Reverse Sear): Remove the roast from the oven and tent it loosely with foil. Let it rest for 20–30 minutes. While it rests, increase the oven temperature to 500°F (260°C).
- Final Sear: Once the oven is hot, place the rested roast back in the oven and broil for 1–2 minutes on each side until a deep brown crust forms.
Part 4: Sauce and Serve
- Finish Horseradish Sauce: While the roast rests, combine all horseradish sauce ingredients in a bowl. Mix until smooth and set aside.
- Strain Au Jus: Strain the simmering Au Jus broth to remove all solids. Skim any excess fat off the top, adjust salt, and keep warm.
- Slice: Slice the roast and serve immediately with the warm Au Jus and cold creamy horseradish sauce.
Expert Tips
- Dry Brining is Superior: The 24-hour dry brine (Part 1) is the secret to a crunchy crust. The salt pulls moisture from the meat and then draws it back in, creating intense flavor and tenderization.
- Monitor with a Thermometer: Never guess! Use a high-quality thermometer (digital probe recommended) inserted into the center. Rely on the temperatures: 120°F (rare), 125°F (medium-rare), 130°F (medium).
- Au Jus Advance Prep: The Au Jus can be made entirely one day ahead, cooled, and reheated. This significantly reduces stress on the day of the feast.
- Resting Technique: The 20-30 minute rest is non-negotiable. To keep the meat warm, wrap it in foil and place it in a cooler (without ice). It will stay warm without overcooking for up to 4 hours.
- The Final Sear: The low-temp reverse sear prime rib method works because the long, slow cook prevents a gray band, and the final high-temp sear/broil rapidly creates the crisp crust just before serving.
Variations
- Herb Crust: For the dry brine, you can blend the salt and pepper with dried herbs (rosemary, thyme, garlic powder) for an easier herb crust.
- Simpler Au Jus: If you don’t have time for the bone broth, skip Part 2 and simply pour 2 cups of beef broth into the roasting pan before the final sear. Scrape up the roast drippings and use that quick liquid for a faster Au Jus.
- Spicy Horseradish: Use freshly grated horseradish instead of prepared horseradish for a truly intense, sinus-clearing kick.
Serving Suggestions
Pair this holiday prime rib recipe with classic, elegant sides:
- Potatoes: Creamy Mashed Potatoes, Scalloped Potatoes, or Roasted Baby Potatoes with Garlic and Thyme.
- Traditional Sides: Classic Yorkshire Puddings, Roasted Brussels Sprouts, or Bacon Maple Green Beans.
- Balance: A simple, fresh green salad tossed with a vinaigrette to balance the richness.
Frequently Asked Questions
Q: Why do I need to let the raw prime rib sit out for 5-6 hours? A: This step allows the dense roast to come up to room temperature. If the roast goes into the oven cold, the outer edges will overcook and dry out by the time the center reaches the proper temperature, resulting in a large gray band beneath the crust.
Q: Is it safe to roast the prime rib at only 250°F? A: Yes, it is perfectly safe and is the basis of the low-temp reverse sear prime rib method. The low, gentle heat ensures the meat cooks slowly and evenly, preventing the gray band that occurs with high-temperature roasting. The meat is only exposed to high heat for the final 1–2 minute sear.
Q: Can I skip the fresh herbs for the Au Jus? A: Yes, if you don’t have fresh herbs, you can substitute 1 teaspoon of dried thyme and ½ teaspoon of dried rosemary for the fresh sprigs. The goal is to build a rich, complex flavor base for the prime rib with au jus, which the dried herbs still help accomplish.
Q: How much prime rib should I buy per person? A: A general rule for a bone-in standing rib roast is to estimate one pound per person. This accounts for the weight of the bones. For a boneless roast, estimate about ¾ pound per person.
Classic Christmas Prime Rib with Au Jus (Low-Temp Reverse Sear Method)
Equipment
- Roasting pan with rack
- Large pot or Dutch oven
- Wire rack and baking sheet
- Meat thermometer
- fine mesh strainer
- Mixing bowls
- Aluminum foil
Ingredients
- 1 (6 lb) Prime Rib Roast (Bone-In or Boneless)
- 3 Tbsp Kosher Salt (approximately 1% of meat’s weight)
- 1 Tbsp Coarse Black Pepper
- 3 lb Meaty Beef Bones (oxtails or neck bones)
- 3 Tbsp Olive Oil
- 1 Large Onion, quartered
- 2 Large Carrots, roughly chopped
- 3 Ribs Celery, roughly chopped
- 5 cloves Garlic, peeled and smashed
- 1 Tbsp Tomato Paste
- ½ cup Dry Red Wine (Cabernet Sauvignon or Merlot)
- 6 cups Low-Sodium Beef Stock
- 2 sprigs Fresh Thyme
- 1 large Bay Leaf
- 1 tsp Beef Base (Better Than Bouillon or similar)
- to taste Salt and Black Pepper
- 1 cup Sour Cream (full-fat recommended)
- 5 Tbsp Prepared Horseradish (adjust for spice level)
- 1 Tbsp Dijon Mustard
- 2 tsp Worcestershire Sauce
- 2 Tbsp Mayonnaise
Instructions
- Pat the prime rib completely dry. Rub evenly with kosher salt and black pepper, covering the fat cap and bones. Place uncovered on a wire rack over a baking sheet and refrigerate for 24–48 hours.
- In a large pot, heat olive oil and brown the beef bones on all sides for 10–12 minutes. Add onion, carrots, celery, and garlic. Stir in tomato paste and cook for 1 minute. Deglaze with red wine, scraping the pot. Add beef stock, beef base, thyme, and bay leaf. Simmer uncovered for about 3 hours to reduce and deepen flavor.
- Remove roast from the fridge and let sit uncovered at room temperature for 5–6 hours before roasting for even cooking.
- Preheat oven to 250°F (120°C). Place the roast on a rack in a roasting pan. Insert a meat thermometer into the center and roast for approximately 3 hours, or until internal temperature reaches 120°F for medium-rare.
- Remove from oven, tent loosely with foil, and let rest 20–30 minutes. This allows juices to redistribute and temperature to rise to about 130°F.
- Increase oven temperature to 500°F (260°C). Return roast to oven and sear for 1–2 minutes per side, until deep brown and crisp.
- In a bowl, combine sour cream, horseradish, Dijon mustard, Worcestershire, and mayonnaise. Stir until smooth and refrigerate until serving.
- Strain the simmered broth, discard solids, and skim off excess fat. Season with salt and pepper. Serve warm alongside the sliced roast.
- Carve against the grain into thick slices and serve with warm Au Jus and cold horseradish sauce.