Thanksgiving Prime Rib Roast with Creamy Horseradish Sauce
If you want to impress everyone at the table this Thanksgiving, skip the turkey and go for a beautifully roasted prime rib instead. It is juicy, tender, and deeply flavorful. This cut of beef is the definition of indulgence.
The rich marbling melts into the meat as it cooks. Every slice has that buttery texture and mouthwatering flavor. Pair it with a creamy horseradish sauce, and you have got a show stopping centerpiece worthy of any celebration.
How to Choose the Perfect Beef
The key to great prime rib starts with the meat itself. Look for a bone in rib roast. The bones help insulate the meat, keeping it juicy and flavorful. A good roast will have visible marbling throughout. That is the fat that melts into the meat as it cooks.
If you can, ask your butcher for a standing rib roast with 2 to 3 bones. This size cooks evenly and fits most ovens easily. For extra tenderness, choose Prime grade beef. But Choice grade works perfectly well too.
What Spices and Seasonings to Use
You do not need fancy marinades to make prime rib shine. A simple mix of salt, black pepper, garlic, and fresh herbs like rosemary and thyme brings out the meat’s natural richness.
I like to season mine at least a day ahead. Rub it generously with salt and pepper. Then let it sit uncovered in the fridge overnight. This is called a dry brine. It helps develop a flavorful crust and draws out moisture for better browning.
Before roasting, brush the meat with olive oil or butter. Add crushed garlic. Sprinkle herbs on top. When the fat renders, it infuses the beef with all those savory aromatics.
Thanksgiving Prime Rib Roast Recipe with Creamy Horseradish Sauce
Yield: 8 to 10 servings
Total Time: 2 hours (Prep: 15 minutes, Cook: 1 hour 45 minutes)
Ingredients
For the Roast:
- 1 (5 to 6 lb) bone in prime rib roast
- 2 tablespoons olive oil
- 2 tablespoons kosher salt
- 1 tablespoon black pepper
- 2 teaspoons garlic powder
- 2 teaspoons fresh rosemary, chopped
- 2 teaspoons fresh thyme, chopped
For the Horseradish Cream Sauce:
- 1/2 cup sour cream
- 2 tablespoons prepared horseradish
- 1 tablespoon Dijon mustard
- 1 tablespoon mayonnaise
- 1 teaspoon lemon juice
- Salt and black pepper to taste
Instructions
Step 1: Prepare the roast
Pat the beef dry with paper towels. Rub all sides with olive oil, salt, pepper, garlic powder, rosemary, and thyme. Let the roast rest at room temperature for 1 hour.
Step 2: Preheat the oven
Set your oven to 450°F (230°C). Place the roast bone side down in a roasting pan.
Step 3: Roast the beef
Cook the roast for 20 minutes. Then reduce the oven temperature to 325°F (165°C). Continue roasting until the internal temperature reaches 130°F (54°C) for medium rare.
Step 4: Rest the meat
Transfer the roast to a cutting board. Cover it loosely with foil. Let the meat rest for 20 to 30 minutes before slicing.
Step 5: Make the sauce
In a small bowl, combine the sour cream, horseradish, Dijon mustard, mayonnaise, and lemon juice. Season with salt and pepper. Chill the sauce in the refrigerator until you are ready to serve.
Step 6: Serve and enjoy
Slice the prime rib against the grain. Serve it warm with the creamy horseradish sauce on the side.
What to Serve It With
Prime rib pairs perfectly with mashed or roasted potatoes, Yorkshire pudding, green beans, or creamy spinach. For something lighter, serve it with a crisp arugula salad or roasted carrots and parsnips.
Do not forget the sauce. That is what ties it all together. A creamy horseradish sauce cuts through the richness, balancing every bite with just the right amount of heat.
Tips for Cooking and Prepping
When it comes to prime rib, temperature control is everything. If you have a meat thermometer, aim for these temperatures:
- 120°F (49°C) for rare
- 130°F (54°C) for medium rare
- 140°F (60°C) for medium
If you do not have a thermometer, do not worry. You can still get a feel for doneness. Press the center of the roast gently with your finger:
- Soft and bouncy means rare
- Slightly firmer means medium rare
- Firm means medium
My advice is to start roasting at a higher temperature. Set your oven to 450°F (230°C) for 20 minutes to sear the crust. Then reduce to 325°F (165°C) and continue cooking slowly until it hits your desired doneness.
Always let the roast rest at least 20 minutes before slicing. This helps the juices redistribute.
If you do not have an oven, you can sear the roast in a heavy cast iron pan and finish cooking it in an air fryer or covered grill on low heat.
Storage and Make Ahead Tips
You can make prime rib ahead of time by roasting it a few hours early. Then slice it and reheat gently in a low oven at 250°F (120°C) covered with foil.
Leftovers keep well in the fridge for up to 4 days. You can also freeze slices for up to 2 months. To reheat, wrap the slices in foil and warm them in the oven until just heated through. Do not overcook, or the meat will dry out.
What to Do With Leftovers
Leftover prime rib makes some of the best next day meals. Try it in sandwiches with horseradish sauce. Add it to beef fried rice or stir fried noodles. You can even turn it into a hearty beef soup by simmering chopped pieces with broth and vegetables.
Frequently Asked Questions
Do I need a thermometer for prime rib?
It is highly recommended. A meat thermometer ensures perfect doneness without overcooking. But if you do not have one, use the touch test and keep an eye on the roast’s color and juices.
What sauce goes best with prime rib?
A creamy horseradish sauce or red wine gravy pairs beautifully. The tanginess balances the richness of the beef.
What if I do not have an oven?
You can cook smaller roasts in an air fryer, slow cooker, or on the grill. Just maintain low heat and finish with a high heat sear for that caramelized crust.
Can I freeze prime rib?
Yes. Slice the meat and freeze it in airtight containers or freezer bags for up to 2 months. Thaw overnight in the fridge before reheating.
What spices are best for prime rib?
Salt, pepper, garlic, rosemary, and thyme are the essentials. You can also add smoked paprika or mustard powder for a subtle twist.
