Our Slow Roasted Prime Rib Roast recipe is a MUST-MAKE holiday favorite! Our melt in your mouth recipe only needs 4 ingredients and is so easy to prepare! Wow your guests with this melt-in-your-mouth easy prime rib recipe. This is the easiest boneless prime rib recipe you will ever make!
Why is this the best prime rib recipe?
Our reverse sear prime rib roast is slow roasted to perfection to seal in all the juices that make a beef roast extra delicious. A reverse sear method ensures a crisp crust on the outside for maximum flavor. When a slow roast rib of beef is reverse seared, it guarantees the juiciest prime rib ever!
You are going to want to make our slow roasted prime rib recipe more than just for Christmas dinner after you try our recipe. You’ll want to find every excuse to make it!
What is prime rib?
The prime rib is the most tender and succulent piece of meat you will taste. If cooked properly, it literally melts in your mouth!
The prime rib roast is a cut of beef from the primal rib section of the cow. While the entire rib section is comprised of ribs 6 through 12, a Standing Rib Roast may contain anywhere from two to seven ribs depending on the number of servings you need.
A prime rib is most often roasted “standing” on the rib bones so the meat does not touch the pan; however, a slow roast prime rib is easier to serve when it is boneless, as you don’t have to carve around the bones. If you choose to go boneless, as we did for our slow-roasted prime rib, you will need a roasting pan with a rack.
What is the difference between Prime Rib and Ribeye Steaks?
The prime rib is a roast with more muscle and fat. Ribeye is a steak cut from the prime rib roast.
The cooking method for each cut is different. You roast a ribeye roast recipe on a rack in the oven which takes much longer than a ribeye steak that you can either pan sear in a skillet on the stove-top or cook on the grill.
Slow Roasted Prime Rib Ingredients
You need only four ingredients to slow roast a prime rib! We use simply salt, pepper, and olive oil. The important part is having the perfect cut of beef to roast to make the best prime rib recipe.
- 8 lb. Certified Angus Beef® brand Boneless Prime Rib Roast
- 1 Tbsp. Kosher salt
- 2 Tbsp. Olive oil
- 2 tsp. black pepper freshly ground
How to Buy a Perfect Prime Rib
It’s all about the marbling! Trust us on this, the perfect prime rib will have lots of marbling, or white flecks, throughout the beef.
What is marbling on meat?
The word marbling refers to white flecks and streaks of fat within the lean sections of beef. The term “marbling” came about because the streaks of fat resemble a marble pattern. It is also called intramuscular fat. Marbling adds so much flavor to beef and is is one of a main criteria for judging the quality of cuts of beef.
For maximum flavor and tenderness, be sure to use Certified Angus Beef® brand prime rib. Click here to find a retailer near you or order online. We love purchasing Certified Angus Beef® brand prime rib because it guarantees we are purchasing the best quality beef with lots of marbling!
How much prime rib per person?
A good estimate on how much prime rib you will need is 1/2 pound per person when the roast is part of a holiday buffet, or 3/4 pound per person if it’s the main course.
If you downloaded the Roast Perfect App, just add the number of guests and the app will do all the work for you.
How to Season Prime Rib|Prime Rib Seasoning
Before you cook rib roast, you’ll want to season it and let it absorb the flavor of your seasoning. Here is how to season prime rib before cooking:
- Salt the roast the day before and refrigerate overnight.
- When ready to cook, rub the roast all over with 2 tablespoons olive oil and 1-2 teaspoons freshly cracked black pepper
- That’s it! That is all you need to make the perfect holiday prime rib roast with simple yet delicious prime rib seasoning!
Garlic Butter Prime Rib
We highly recommend trying our Garlic Butter Recipe with this prime rib slow roast recipe! Garlic herb butter adds so much flavor to a simple prime rib roast.
Reverse Sear a Prime Rib to Lock in Flavor
Slow-roasted prime rib flips the traditional method on its head!
Traditionally, roasting prime rib is done at the beginning, at a high temperature for about 15 minutes to develop the crust on the outside and then cooked at 325°F for another hour or so to reach the desired degree of doneness. This method tends to have more moisture loss during the initial blast of high heat.
Slow cook a prime rib and it will lock in all the juices for maximum flavor and tenderness. Plus, slow roasting delivers more even cooking from the center out. When you roast a prime rib low and slow in the oven, you’ll notice there will be a very small amount of juice that accumulates in the bottom of the roasting pan, if any at all.
All of the drippings remain in the roast, resulting in a prime rib that is more tender and juicy than any other method of cooking. Once the prime rib is slow roasted to the desired degree of doneness, put it in a high heat oven for about 15 minutes before serving to achieve a beautifully crisp, browned crust on the outside which adds tons of flavor!
This truly is our favorite recipe for a prime rib roast. In fact, we think it’s the best roast prime rib recipe out there! Give it a try, and we know you’ll think so, too.
How to Cook Prime Rib
It truly is so easy to learn how to cook a prime rib roast perfectly. Cooking prime rib comes down to how many people you are serving and the desired doneness for your roast. Here are the instructions you need for making an easy prime rib recipe in the oven:
- Use the FREE Roast Perfect App from Certified Angus Beef® brand to select the perfect size roast for the number of guests you are serving. Click here to download the Roast Perfect App for free.
- Salt the roast the day before you plan on cooking it and refrigerate overnight, uncovered.
- When ready to roast, preheat the oven to 200°F.
- Rub the roast all over with 2 tablespoons olive oil and 1-2 teaspoons freshly cracked black pepper.
- Place prime rib roast on rack in roasting pan.
- How long to cook prime rib: Place roasting pan in the preheated oven until the center of the roast reads 120°F for medium-rare; about 4 hours, but time will vary depending on the size of the roast.
- Remove roast from oven and tent with foil to rest for at least 20 minutes.
- Turn oven temp up to 500°F.
- Once the oven reaches 500°F, remove the foil and put the roast back in the oven. Cook until browned and crisp on the outside. About 10-15 minutes. Transfer roast to a cutting board and rest the roast at least 15 minutes
That’s it! Can you believe it is this easy to cook the best prime rib recipe? Roasting prime rib is really so simple.
Prime Rib Temperature Chart
It is always best to use a meat thermometer to make sure your prime rib is done perfectly to your liking. The free Roast Perfect App will give you a perfect estimate of how long your roast should cook for your desired doneness, but when using a meat thermometer to check, look for the following numbers.
- Rare: 120-125°F – Bright red interior
- Medium Rare: 130-135°F – Pink on the outer crust with a deeper red center
- Medium: 135-140°F – Mauve/light pink colored interior
- Well-done: 145°F+ – Brown, no pink
Tips for cooking the Perfect Prime Rib
- The night before roasting the prime rib, unwrap the beef and set it in the refrigerator. Keep it uncovered on the sheet pan with a rack. This allows the surface moisture to evaporate and will guarantee a beautiful brown crust when you sear it.
- Three hours before roasting, take the beef out and place it on a sheet pan (to catch any juices) and keep at room temperature. This step is key to an evenly roasted prime rib recipe.
- Rest your prime rib for 15-20 before slicing. This will help keep in all the juices for the juiciest and moistest prime rib.
Prime Rib Leftovers
Don’t forget the leftovers! Prime rib is just as delicious the next day! We love to make open-faced prime rib recipes at our house.
One of the best recipes you can make using leftover prime rib is creamy penne pasta with sliced prime rib. Follow our homemade Fettuccini Alfredo recipe and use the leftover prime rib in place of chicken. The combination is incredible!
And our absolute favorite is making a prime rib and remoulade sauce sandwich. You haven’t lived until you try this leftover sandwich!
Side Dishes for Prime Rib
Our recipe for prime rib is the ultimate Christmas dinner, especially when you pair it with these delicious side dishes for roast beef. Here are our favorite prime rib side dishes:
- Au Gratin Potatoes
- Creamy Mashed Potatoes
- Roasted Artichoke Salad
- Smashed Brussel Sprouts
- Garlic Parmesan Roasted Carrots
- Brown Sugar Glazed Carrots
- Yorkshire pudding
- Butternut Squash Dinner Rolls
- Mashed potatoes
- Instant Pot Risotto
- Dinner rolls
The Best Roast Beef Dinner Ideas
For more roast beef recipes, including more recipes for roasting prime rib, try these!
- Whole Beef Tenderloin
- Beef Chuck Roast Recipe
- Instant Pot Pot Roast
- Slow Cooker Mississippi Pot Roast
- Dutch Oven Pot Roast
- Easy Slow Cooker Roast Beef Recipe
Other Favorite Prime Rib Recipes
Slow Roasted Prime Rib
- 8 lb Certified Angus Beef® brand Boneless Prime Rib Roast
- 1 Tbsp Kosher salt
- 2 Tbsp Olive oil
- 2 tsp black pepper freshly ground
- Use the FREE Roast Perfect App by Certified Angus Beef® brand to select the perfect size roast for the amount of guests you are serving
- Salt the roast all over with 1 Tbsp kosher salt the day before you plan on cooking it and refrigerate overnight, uncovered
- When ready to roast, preheat the oven to 200°F
- Rub the roast all over with 2 tablespoons olive oil and 1-2 teaspoons freshly cracked black pepper
- Place prime rib roast on rack in roasting pan
- Place roasting pan in preheated oven until the center of the roast reads 120°F for medium-rare. About 4 hours, but time will vary depending on the size of the roast. Use an instant-read thermometer or meat probe and cook to 5 degrees below your desired temperature for doneness.
- Remove roast from oven and tent with foil to rest for at least 20 minutes. Turn oven temp up to 500°F.
- Once the oven reaches 500°F, remove the foil and put the roast back in the oven. Cook until the outside is nicely browned and crisp. About 10-15 minutes. Transfer roast to a cutting board and rest the roast at least 15 minutes before serving.
Post updated on 11/06/2019.
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