Sous Vide Prime Rib Roast— Perfectly Tender, Juicy & Restaurant-Quality Every Time

Prime rib just screams the holidays. It’s always been a family tradition of mine to make prime rib for Christmas Eve, and it’s always the food highlight of my year. The meal I dream about all year round. Even so, I decided I was going to kick it up a notch. I was going to master the prime rib and make an unrivaled roast that my family and guests would rave about for years to come.

Sous-vide cooking transforms prime rib into a reliably tender, juicy roast that’s pink edge-to-edge with minimal effort. With a bath at 56 °C / 133 °F for 8 hours, this method gently breaks down collagen for melt-in-your-mouth texture while preserving a consistent rosy doneness.

The result: a roast that slices beautifully and stays juicy, with a rich crust after a quick high-heat sear. Whether you’re cooking for a holiday feast or a special dinner, this sous vide prime rib delivers restaurant-quality results with less stress and more control.

Deciding that I was going to sous vide the prime rib was easy. It is truly the only way to guarantee the meat is tender, juicy and perfectly cooked all the way through. Deciding how to season the prime rib was a little more difficult.

After some experimentation and test runs, I finally figured it out. I created salty, garlicky and herbaceous compound butter that perfectly compliments the flavor profile of the prime rib. This butter compound is all the salt and flavor the prime rib needs for epic taste.

Furthermore, coating the roast in this butter amplifies the Malliard reaction in the oven, which creates a picture-worthy sear.

Add sous vide prime rib and garlic herb compound butter together and you have a fool-proof method of making unforgettable prime rib. Now take this knowledge and become the prime rib master that will be cherished by your family and guests for many moons.

Why Sous Vide Prime Rib

Using the precise temperature control of sous vide ensures even cooking throughout the roast — from edge to center — eliminating the common problem of overcooked outer layers and undercooked interior.

Low-temperature, long-time cooking gently melts connective tissue into gelatin, resulting in a tender, juicy texture that conventional roasting often struggles to achieve with such consistency. 

That consistent medium-rare doneness and moisture retention make sous-vide prime rib a top option for special occasions and holiday dinners, where presentation and flavor matter. 

To French or Not to French

“Frenching” is a culinary technique that involves exposing the rib bones by cutting off meat and fat from the bone side of a roast. Frenching is generally used to beautify a dish and make it look fancier.

However, for this recipe frenching makes sense since you are trimming away excess fat in advance that you would end up cutting off later. Plus the prime rib looks absolutely stunning frenched.

If you want to be adventurous and learn a new skill, try frenching the prime rib yourself at home. Just make sure your knife is real sharp so you can effortlessly carve this heavenly piece of meat. I recommend the E5 electric knife sharpener for the job.

If frenching isn’t for you, just ask your butcher and they will be happy to do it for you.

If you’re planning a special occasion or Valentine’s dinner, we’ve put together a complete stress-free sous-vide Valentine’s guide with menu ideas and timing tips.

Packaging

An essential part of cooking sous vide is putting ingredients in an air-tight bag or container. The two most common techniques to package your ingredients are vacuum sealing and using the water displacement method.

A vacuum sealer removes all the air and seals the contents of a plastic bag through a vacuum. Ensuring the food is airtight and properly sealed prevents the bag from floating, which can result in uneven cooking.

The displacement method is a technique where you first place your food and marinades in a sous vide bag, submerge the bag in a container of water, and allow the pressure to force all the air out of the bag.

Both of these methods work for this recipe, so use whichever you feel more comfortable with!

Sous Vide Cooking Step

1. Preheat your sous vide bath to 56 °C / 133 °F. 

2. Place the seasoned prime rib in the bag and seal it (vacuum or displacement). Submerge fully in the water bath. 

3. Cook for 8 hours. That time is sufficient to break down collagen and deliver a tender roast with a consistent rosy doneness throughout.

Time and Temperature

We found that cooking the rib roast at 56C/133F for 8 hours is the perfect combination. Leaving the roast in for 8 hours breaks down the connective tissue (collagen), which results in an extremely tender roast. Also, cooking it at a temperature of 133F is the sweet spot for that perfect edge-to-edge beautiful rosy color.

Just make sure you have a reliable sous vide that accurately regulates the temperature of the bath or your results may vary (check out the Anova or Joule). If you want to explore other time and temperature options, check out our cooking guide here.

Prime rib doneness temperatures

This recipe is written for medium-rare at 133°F / 56°C, which is how I serve prime rib. If your table likes it a different way, change the water bath temperature and keep everything else the same.

Chef tip: if a few guests want their beef more done, cook the whole roast at 133°F and give their slices 30 to 60 seconds in a hot pan or in the simmering jus just before serving. Everyone else still gets medium-rare.

How long to sous vide prime rib by thickness

Measure the roast through its thickest point, not end to end. Thickness sets the cooking time far more than weight does. Doubling the thickness of a piece of meat roughly quadruples the time it takes to heat through, according to Douglas Baldwin in A Practical Guide to Sous Vide Cooking. Adding ribs mostly makes a roast longer, so a 3-rib and a 4-rib roast take close to the same time.

The heating times come from Baldwin’s heating table for cylinder-shaped cuts starting at 41°F / 5°C. The extra hours on top are what turn the roast tender. A roast that goes in frozen needs about half as long again, so I always thaw mine in the fridge first.

Bone-in or boneless prime rib?

Both work at the same time and temperature, because the thickness of the eye is the same. A bone-in standing rib roast looks better on the table and the meat next to the bone has the best flavor. The catch is the bones, which can poke through a bag over a long cook. Fold a paper towel over the bone tips or double bag the roast. Another option is to ask your butcher to cut the bones off and tie them back on. You get the bone-in flavor and carving is much easier.

A boneless rib roast (often sold as a ribeye roast) is easier to bag, fits smaller containers and carves into neat slices. Buy a little less per person, as below.

Placing Roast in an Ice Bath

Once the prime rib is finished cooking in the sous vide, I recommend immediately transferring it to an ice bath. An ice bath is the term for a big bowl or cooler filled with ice and water.

Placing the standing rib roast in the ice bath for 10 minutes will cool down the external temperature and make it easy to spread the butter compound. If the external temperature is not cooled, the butter will instantly melt.

Alternatively you can cool the prime rib in the refrigerator for 20-30 minutes, or until the external temperature is chilled.

Finishing the Prime Rib- The Crucial Step to A Great Crust!

Searing is the most critical step in the sous vide process. Getting a deep, rich sear can make your food look like it is Michelin star quality. Failing to do so will make your dinner guests wonder why they let you cook again.

If you want to get an amazing sear on your rib roast, you’ve got to:

1. Pat your meat completely dry
2. Coat generously with compound butter
3. Finish at high temps to achieve a deep, rich sear

Applying Compound Butter

First, pat the meat completely dry using paper towels. After the meat is dry, coat the roast generously with the compound butter. The most effective way to spread the butter evenly on the rib roast is with fork or a silicon spatula. 

Note that the external temperature of the prime rib needs to be cool to properly apply butter. Please drop the roast in an ice bath or chill in a refrigerator until chilled prior to applying the butter.

Seasoning & Herb-Butter Flavor Boost

Generously season the roast with salt and pepper before sealing. A simple compound butter — softened unsalted butter mixed with garlic, chopped rosemary, thyme, salt and seasoning salt — adds savory depth and helps build a rich crust.

Searing the Roast

Last, cook the prime rib at high temperatures to achieve a deep, rich sear. We suggest baking the roast in the oven at 475F for 15 minutes.

This high temperature ensures the butter will melt quick, which amplifies the Malliard reaction and results in a nice crust. Also 15 minutes will make sure the internal temperature of the roast is at serving temperature.

Equipment & Preparation Tips

• Use a large vacuum bag (or freezer-quality bag) that fits your roast. Vacuum seal it or use water displacement to remove air.

• A large container (e.g. 12-quart plastic box) helps ensure the roast stays submerged. A lid or cover reduces evaporation during long cooks.

• If using a bone-in roast, some cooks choose to ask their butcher to “french” the bones (i.e. trim fat and expose bones) for easier trimming and more elegant presentation — but it is optional. 

How much prime rib per person

I plan on about 1 pound of bone-in roast per person, which works out to one rib for every two guests. For boneless, ½ to ¾ pound per person is plenty, more if you want leftovers.

A whole 7-rib roast rarely fits one bag or a 12-quart container. Cut it into two pieces between the ribs, bag them separately and use a large cooler as your water bath.

Sear before or after the water bath?

This recipe sears after the bath, which works like a reverse sear. Some cooks also brown the raw roast in a hot pan before bagging it. You get a little more roasted flavor in the bag juices, but the crust softens during the long cook, so you still need the final sear. I skip the pre-sear and put the effort into the butter crust and a properly hot oven at the end.

If your oven is full, a boneless roast can be seared in a heavy cast iron pan, turning it every minute or so, or finished under a hot broiler. Keep an eye on it either way, because the garlic in the butter can scorch.

Holding and making prime rib ahead

Once the roast has reached temperature, it can stay in the 133°F bath for a few extra hours without overcooking. That makes it very forgiving when dinner runs late. I keep the total time to about 12 hours, as the texture keeps softening the longer it sits.

To cook a day or two ahead, take the sealed bag straight from the bath into ice water that is at least half ice. Baldwin’s cooling table gives about 3 hours for a 3-inch thick roast and about 5 hours for a 4-inch roast. Top up the ice as it melts, then refrigerate the roast in its bag and use it within 3 days. On the day, put it back in a 133°F bath in the same bag for 5 to 6 hours, then dry it, butter it and sear it as above.

A simple holiday timeline

For a 6 pm dinner, I make the compound butter the day before. The roast goes into the bath between 8 and 10 am. At about 5:15 pm it comes out for its short ice bath, gets buttered and goes into the 475°F oven for 15 minutes. It needs only a few minutes of rest before carving, because the inside is already at serving temperature. The oven is free for most of the day, and sides like sous vide mashed potatoes, sous vide glazed carrots or sous vide asparagus can share the bath or go in a second one. For more holiday planning, see our sous vide holiday planning guide.

Quick au jus from the bag juices

Do not pour the bag juices away. Tip them into a small saucepan and bring them to a boil. The proteins will set into a grey foam. Strain it through a fine sieve lined with a paper towel and you are left with clear, beefy liquid.

After the roast comes out of the oven, set the roasting pan over medium heat and add ½ cup red wine, scraping up the browned bits. Add the strained juices and 2 cups beef stock, then simmer until reduced by about a third. Season with salt and pepper. For a thicker gravy, whisk in 1 teaspoon cornstarch mixed with 1 tablespoon cold water and simmer for another minute. Boiling the bag juices matters, because they have only been heated to the bath temperature.

Leftover prime rib

Refrigerate leftovers within 2 hours and use them within 3 to 4 days, or freeze them for 2 to 3 months, following USDA FSIS leftovers guidance. To reheat slices without cooking them past medium-rare, seal them in a bag and warm them in a 130°F bath for about 30 minutes for ½ inch slices. For French dip sandwiches, slice the cold beef thin and dip it in hot jus for a few seconds.

Special Equipment

Sous Vide Machine – This one is obvious. To cook sous vide, you’re going to need a device to precisely regulate the temperature of the bath water. The two best sous vide machines in the game right now are the Anova Precision Cooker and the Breville Joule.

The main difference between the two is that with the Anova you can control the device both manually and with a mobile device, and with the Joule you can only control the device by using your mobile device. Either way, both sous vide machines are top class and you can’t go wrong with either choice.

12-quart Container – Although you can use a basic stockpot for your sous vide cooking needs, I highly recommend buying a large plastic container. They are inexpensive and spacious, so you won’t have to worry about cooking a big roast in a small pot. I recommend a 12 quart Rubbermaid container, as it is BPA free, sturdy, and large enough for just about anything you will be cooking.

Container Lid – If you are going to buy a plastic container, I highly suggest buying a compatible lid for it. When you sous vide for a long duration, the heat of the water causes evaporation. With a lid, it eliminates a majority of the evaporation so you can cook for hours care-free.

FoodSaver Rolls – Finding a bag that can fit a big rib roast is not an easy feat. The best solution we found was to use the FoodSaver Expandable Rolls. 

Roasting Pan and Rack – Having a quality roasting pan for this recipe can help achieve an excellent sear in the oven. We use this stainless steel roasting pan because it’s perfect for larger roasts like prime rib roasts and turkey, and it comes with both a flat roasting rack and a V-shaped rack for flexibility.

Next Level Sous Vide –Looking to take your sous vide skills to the next level? The Next Level Sous Vide eCookbook will push your culinary boundaries with 65 delicious recipes that are equally approachable and tasty. With pro tips and a detailed explanation of the sous vide process, you will be on your way to maximize your sous vide skills.

Check out our full list of recommended gear here.

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Sous Vide Prime Rib Roast

Course Main Course

Cuisine American

Keyword christmas, holiday, prime rib, rib roast

Prep Time 5 minutes

Hands-On Cook Time 25 minutes

Sous Vide Time 8 hours

Total Time 8 hours 30 minutes

Servings 6 people

Ingredients

• 5 -7 lb prime rib roast
• 1 cup unsalted butter, softened
• 6 cloves garlic, minced
• 2 tablespoon fresh rosemary, chopped
• 2 tablespoon fresh thyme, chopped
• 1 tablespoon salt
• 1 tablespoon Lawry's seasoning salt
• 1 tablespoon black pepper

Instructions

Preparation

1. Set sous vide machine to 56C/133F.

2. Salt the rib roast to taste. Put the roast in a freezer bag, and remove the air through a vacuum sealer or the displacement method. Drop prime rib in the bath for 8 hours.

Finishing

1. Mix together softened butter, garlic, rosemary, thyme, salt and Lawry's seasoning salt together in a bowl until the compound butter is spreadable.

2. Remove bag from bath and immediate transfer the roast into an ice bath Let t.he roast chill for 10 minutes. Remove bag from ice bath, take rib roast out of the bag and thoroughly pat dry.

3. Preheat oven for 475F. Evenly coat garlic herbed compound butter on the entire prime rib. Place rib roast on a baking rack pan and cook for 15 minutes. Check with a meat thermometer to ensure that the internal temperature is 110F or your desired serving temperature.

4. Remove rib roast from oven. Let rest for 5 minutes. If it is a bone-in roast, carefully carve off the bones making sure not to cut into the roast. Carve the prime rib into slabs and enjoy this heavenly piece of meat. *Pro tip - brush the excess butter and garlic mixture from the pan onto each piece before serving.

Troubleshooting & Adjustments

• Smaller or larger roasts: The original recipe suggests 8 hours works for 5–7 lb roasts.

• If roast is smaller than ~4 lb, you might consider reducing sous-vide time (e.g. 5–6 hours) — a smaller mass will heat through faster. 

• If roast is much larger, some increase cook time to 10–12 hours for even cooking; but extended time beyond tenderizing gives diminishing returns.

• Bag floating / uneven heat contact: Ensure bag is tightly sealed and submerged; using a heavy clip, weights or suitable container helps prevent floating. This ensures even cooking and safety. 

Why This Method Works (Science Behind It)

Sous vide cooking uses controlled temperature below traditional roasting heat, which prevents outer layers from overcooking while allowing even heat penetration. This results in uniform doneness throughout. 

At these lower temperatures over a long duration, collagen in the meat’s connective tissue gradually converts to gelatin, giving moisture retention and tender, almost buttery texture — something difficult to replicate with standard high-heat roasting. 

Adding a final high-heat sear with herb butter combines the best of both worlds: internal tenderness and rich, flavorful crust like a classic roast.

FAQs

Q: Can I sous-vide a larger prime rib roast (e.g. 10–12 lb)?
A: Yes. Many sous-vide cooks extend the cook time to 10–12 hours for larger roasts to ensure even heat penetration while still achieving tender, juicy meat.

Q: What if I’m cooking a smaller roast (under 4 lb)?
A: For smaller cuts, reducing the sous-vide time to around 5–6 hours can be sufficient, since the meat volume is lower and will heat through more quickly.

Q: Is the final sear essential?
A: Yes — without the high-heat finish, the roast will lack the desirable crust, colour, and depth of flavour. The herb-butter sear helps develop the Maillard reaction for that classic roast taste and appearance.

Q: Can I prep the roast the day before serving?
A: Yes — you can sous-vide ahead of time, chill it (vacuum-sealed), then apply butter and sear just before serving. This can make holiday or event cooking more manageable while still ensuring fresh, crispy crust and tender interior.

Q: How long do you sous vide prime rib?
A: For most whole rib roasts, which are 4 to 5 inches thick, 8 hours at 133°F / 56°C. Thinner roasts can be ready in 5 to 6 hours. Use the thickness table above rather than the weight.

Q: What temperature should I use for medium-rare prime rib?
A: 133°F / 56°C. Use 130°F / 54.5°C for rare and 140°F / 60°C for medium.

Q: Can I use this method for a boneless ribeye roast?
A: Yes. Use the same temperature and time based on the thickness of the roast. Allow ½ to ¾ pound per person.

Q: Can I sous vide prime rib from frozen?
A: You can, but allow about half as long again for it to heat through. For a holiday roast I thaw it in the fridge first so the timing is predictable.

Q: How long can prime rib stay in the sous vide bath?
A: Up to about 12 hours in total at 133°F. Past that the meat stays safe at this temperature but the texture gets softer than I like.

Q: Do I need to rest sous vide prime rib?
A: Only for a few minutes after the oven. The meat is already evenly cooked, so it does not need the long rest a conventionally roasted prime rib needs.