How Much Prime Rib per Person For A Big Group

How To Calculate How Many Pounds of Prime Rib per Person For A Large Group

Prime rib is really a delectable piece of meat that is ideal for entertaining. It is one of the best cuts when catering to a large group of people that you want to serve a memorable beef main.

It can be easily be converted into a variety of recipes and,  regardless of how you prepare it or whatever you serve it with, it always turns out to be really tasty.

See our Prime Rib Calculator below which will take into account, the guest mix, how many mains you are serving as well as side dishes.

Many people use this calculator for Thanksgiving, Christmas, and other family gatherings to get exactly how much prime rib to buy and serve for each guest.

How Much Prime Rib to Serve Per Person for a Big Group or Your Holiday Dinner?

ANSWER: Each Person will typically eat approximately a half-pound of cooked prime rib.  If you are serving your guests a holiday or Thanksgiving buffet guests helping themselves will often take a little more, especially if the prime rib is the only meat dish. So you need to allow for that by budgeting up to 3/4 pound.

Another way to calculate how much prime rib for each person is to plan on serving one rib for every 2 guests.

Calculator For How Much Prime Rib To Buy and Serve Per Person
Calculator For How Much Prime Rib To Buy and Serve Per Person

However, there will also be variations depending on your guest list makeup, and how many side dishes you serve. Therefore it is best to budget on 1/2 pound per person of boneless cooked meat.

If you’re anxious about catering to a crowd, purchase a little extra since you can easily enjoy the leftovers the very next day, and they tend to improve with time as they rest in their flavors.  You can also read our guide on “Catering For A Crowd“.

Also, consider the difference between how much prime rib to purchase per guest for a holiday dinner vs how much you will serve per person – this is code for do not forget to take into consideration that meat shrinks by 25-40 percent during cooking some 1/2 pound of raw prime rib are likely to yield only a bit over a 1/4 pound when cooked.  Do not let your guests go hungry.

How Much Prime Rib Per Person Calculator

Click On The Guest Detail to add how many women, men, teenagers etc are coming to your big prime rib event and the calculator will account for that guest mix.

How much Prime Rib Do I need Per Person
How much Prime Rib Roast Do I need Per Person

Table of Exact Quantities of Prime Rib Per Person

Number Of PeoplePounds Of Boneless RibRibs Needed (Bone-in)Cooking TimeCooking Temperature
634 Bone-in Roast2.5 hours220-230 F
845 Bone-in Roast3 hours220-230 F
1262 x 4 Bone Roasts3 hours220-230 F
50255 x 6 Bone Roasts3.5 hours220-230 F

What is Prime Rib?

Prime is a cut of beef from the Primal Rib are of a steer – hence the name Prime Rib. This section is also called the back upper rib section.

Is Prime Rib and Rib Eye the Same?

The Prime Rib vs Rib Eye – comes from the same part of the steer, and the rib eye is the tender marbled part of the boned counterpart – it just has been cut out by the butcher.

What Part Of The Beef Is Prime Rib

Why is Prime Rib so Good?

Prime Rib is good or so special because it has an “eye” of marble meat in the center of the rib cut.  It is also worth noting that this part of the beef does not get a lot of work – so the area is a beautiful tender and succulent cut of beef – that is why it is so special.

What Is the Price of Prime Rib per Pound

The price of prime rib depends on the quality of the cut, the size of the portion, the type of cooking method used, and the amount of prime rib you order. A typical prime rib will cost around $30-$40 per pound. 

Looking on the Costco retail site it has a Black Angus Prime Rib Roast at around 27 dollars per pound. With a typical roast size being in the 7-9 lb range.

Boneless vs Bonein Prime Rib

How do you decide what cut to buy? At the supermarket or local butcher, you will be given the options of what you want. 

Bone-in will always be tastier because the bone will lend flavor to the neat when cooking vs boneless where the meat is trimmed from the bone. 

Is Boneless or Bone-In Better when Catering to A Large Group?

 If you are planning on grilling Prime Rib for a large group then boneless will cook faster and more evenly. This is why many people will choose boneless for a crowd and bone-in for a smaller family dinner.

How To Shop For Prime Rib

The best way to shop for prime rib is to start by looking at the price per pound. Remember also that meat shrinks and will reduce in weight when cooking so you always need to buy a little more to allow for this.

See our calculator above to work out how much Raw or Uncooked Prime Rib to buy.

In some states, it is also called a standing rib roast – the name coming from the way the ribs stand up during and after cooking.

Do not be afraid of the fat level as when rendered properly the fat really adds to the overall flavor of the meat.

In fact, in a Prime Rib and Steak Survey of Consumers who were meat-eaters, 80 percent said that having a good amount of fat content in the raw meat was the key to a flavorsome beef dish and rave reviews from guests or family members.

If you are really looking to impress your guests then consider buying – “Dry Aged” Prime Rib. The aging process makes it even more tender, juicy, and flavorsome.

Look out for and buy – USDA Prime Grade Roast

The best way to get the best and highest quality is to choose the USDA grade of PRIME. It will be more expensive, however.

Only 2-3 pieces out of a hundred will be graded USDA Prime – so you may need to order it in advance.

What Is the Most Tender Part of The Prime Rib

Chose The Small End of the Roast Ribs as this is the most tender portion.

How Much Prime Rib Per Person Should You Cook?

The amount of prime rib per person depends on a few variables but in general, you should cook at least 30 percent more to allow for meat shrinkage.

What Is The Best Way To Season Prime Rib
What Is The Best Way To Season Prime Rib

What Are Some Ways to Season Prime Rib?

The best way to season prime rib is by rubbing salt and dry rub into the meat before cooking. This helps draw out moisture from the surface of the meat, which makes the meat juicier.

Rubbing the meat with butter or oil after cooking is another great way to add flavor.

Here are the top 15 ways to Season Prime Rib in 2022

Seasoning Your Prime Rib

1. Salt and Pepper – to bring out the natural flavor of the ribeye

2. Butter – Butter can be used in conjunction with any other seasoning method.

3. Soy Sauce A classic Chinese-style sauce made from soybeans and wheat flour. Use sparingly as too much will overpower the taste of the prime rib

4. Garlic – garlic has an intense flavor and works well with all meats including prime rib

5. Herbs – thyme, oregano, basil, parsley, sage, cilantro, chives, mint, tarragon,

6. Red pepper flakes

7. Onion – caramelized onions, chopped onion, sliced onion

8. Curry powder – Indian spice blend

9. Mustard – Dijon mustard, whole grain mustard, honey mustard

10. Sesame seeds

11. Lemon juice

12. Balsamic vinegar

13. Horseradish

14. Rosemary Rub

15. Olive Oil

Is Prime Rib Easy to Cook?

It depends on what cut you choose. If you want to cook a whole prime rib, it will be quite different than a boneless variety.

The best two pieces of advice are to firstly get a really good meat probe thermometer and experiment first before your guests arrive. Always try a recipe first as there are just so many variations.

What Are the Best Ways to Cook Prime Rib (For a Crowd)

 Cooking for a large ground will really come done to what resources you have and are you going to hire an extra grill or oven.

Here Are the Top 5 Ways to Cook Prime Rib In 2022 

1. Oven – this is the best way to cook prime rib for a big crowd and in a large oven, you may be able to cook up to 2 prime ribs or more.

2. Grilling – This is best suited to boneless and you can fit more per size of the grill

3. Fire Pit – why not cut the raw meat and let each guest cook their own piece on a long tong and firepit grill plate

4. BBQ with the top down – if you have a big BBQ and you can put down the lid and slow roast prime rib to perfection

5. In the ground – this is more an island way – make a big fire pit – set it alight some it burns down to embers. Then wrap the prime rib well in foil and set in the ground to cook. Cover with the embers and if necessary keep the fire going to ensure heat. This way if you know what you are doing you can cook a large quantity in one place. The key is to try this cooking method in advance so that you know exactly what to do on the day and how long to cook the meat.

How to make Prime Rib

Start by doing a simple recipe so that you get your temperatures and timings right for your oven. As each will vary slightly and some will have hot spots. If you know your oven has hot or cold spots do not forget to rotate the roast at least every 60 minutes.

How to Prepare a Rib Roast

Start by making a classic prime rib roast and season with salt and pepper and enhance the overall flavor with herbs and spices to give the end result of a fully seared and crackling crust on the prime rib.

Plus, we tell you how to create a delicious homemade gravy using a combination of stock and beef drippings. To see how much gravy you need per person for a big group see our gravy resource page.

Tips for Perfect Prime Rib

One of the most important things to remember when cooking prime rib is to keep the temperature steady. This will ensure that the meat stays tender and juicy.

Tye, you roast with butcher’s string so that it cooks without separating. Space the string in 1.5 to 2-inch intervals.

You should always use a meat thermometer to check internal temperatures. You don’t want to overcook the prime rib.

To prevent sogginess, cover the prime rib with aluminum foil after roasting and let it rest for at least 5 minutes. before you cut it.

Make sure you remove the strings before carving

I’ve found that the best way to cook a whole prime rib is to start it off in a low oven (325F/165C), then finish it on a charcoal grill over direct heat to get the crusts and burnt ends that people love. 

Do not forget to sear the roast quickly (reverse searing) before cooking this adds a lot of flavors and keeps the juices inside

Smoking a Prime Rib in a  Traeger Pellet Grill can also deliver family dinner to rave about.

Top Sides To Serve With Prime Rib Infographic
Top Sides To Serve With Prime Rib Infographic

What Are the Best Side Dishes to Serve with Prime Rib for A Big Group?

Here are the top 15 easy side dishes to serve with prime rib in 2022

1. Mashed Potato

2. Cream Swiss Chard

3. Green Bean Casserole

4. Potato Salad

5. Garlic Mashed Potatoes

6. Roasted Root Vegetables

7. Baked Beans

8. Sweet Corn

9. Sautéed Spinach

10. Asparagus

11. Peas

12. Carrots

13. Turnips

14. Broccoli

15. Mac and Cheese

Can Prime Rib Be Prepared in Advance for A Large Group

Both methods below can be used to prepare Prime Rib in advance. You can make it 2-3 days ahead of the guest’s arrival and store it in the fridge.

A prime rib roast is an excellent choice for entertaining guests. This type of meat has a rich flavor and tender texture. There are two different types of cooking methods for this cut of beef. The first method involves placing the roast on a rack in a pan and baking it at a low temperature until the internal temperature reaches 145 degrees F (63 degrees C). The second method involves searing the roast before roasting it at a higher temperature.  

How to Reheat Prime Rib that Has Been Prepared in Advance

How to Reheat Prime Rib That Has Been Prepared 2 days ahead of time.

You want to reheat the roast but not overcook it. Wrapping it in tin or aluminum foil will keep the cut tender.

It’s easy to get caught up in planning an event and forget about reheating food that has been prepared ahead of time. But if you do this, you can end up with dry meat and undercooked vegetables.

You should have your oven preheated before you start cooking. If you don’t, you could burn the food before it’s done.

When you reheat prime rib, you want to make sure that you cook it long enough to heat through. How long will depend on how many pounds of meat you are reheating?  The best way to tell when a reheated prime rib is done is to use a thermometer to check the internal temperature of the meat, it should be reheated to 160 F according to the USDA. This is an internal temperature and is the recommendation for reheating leftover meat. Clearly, that is more than the temperature of 140 for a medium result. So you will have to use your best judgment and be very confident you stored your leftovers safely.

This typically takes 90 minutes depending on the size of the prime rib.

Top 3 Tips for Reheating Prime Rib

1. Do not rush – be patient, doing this will preserve as much of the initial taste texture and nice pink-red color of the prime rib.

2. As soon as the desired temperature is reached, take the roast off the stove. Don’t let it sit around too long. You want to eat it right away.

3. Always wrap the meat with foil before reheating or if you are using au jus to moisten the prime rib, cover the whole roasting or baking dish with aluminum foil.

What Are the Most Popular Ways when Serving Leftover Prime Rib

Here are the top 7 ways to use leftover prime rib for 2022

1. Make a prime rib hoagie

2. Prime Rib Sliders with horseradish sauce.

3. Open Faces Sourdough Sandwich – Leftover prime rib is great for sandwiches because it doesn’t dry out like other cuts of beef.

4. Make Asian Beef Soup

5. Stroganoff of Prime Rib is amazing with onion and sour cream

6. Leftover Prime Rib Sandwiches for lunch Toasted

7. Thick Whole Steakburgers with coleslaw and  french fries

How Long Can Prime Rib Last In The Fridge Before Cooking

Raw or uncooked Prime rib can be stored in the refrigerator for 3 to 4 days in an airtight sealed container.

After that, you should cook it.

If you know how to do it then using the dry-age system, you can keep raw prime rib in the refrigerator for around 3 months. This is the maximum length of time according to the USDA.

How To Dry-Age Store Raw Prime Rib

Dry aging meat is to let the natural storage take care of the beef.  During this time, the muscles relax and the meat loses its red color.

Start by completely drying the raw prime rib before placing it in the fridge.

You must also leave it uncovered.

Using this preparation method it can last for up to 3 months in the cool fridge.

How to Store Uncooked Prime Rib Roast for 5 Days?

I purchased a 7lb Costco rib roast, can I store it for 5 days?

Storing it for 5 days is right on the edge of food-safe practices. You must wrap it well in airtight plastic and also in an airtight container.  Furthermore, you must refrigerate it at 40 degrees Fahrenheit. To do this place it in the coldest part of the fridges, usually at the back.

The USDA recommends storing raw meats for no longer than three days.

Can You Freeze Prime Rib

Prime Rib can be frozen successfully if you place it in the freezer within 2-3 days of purchasing.

Prime rib is a fantastic main dish that really can easily sustain a large household. As a result, if it’s on sale, you may freeze it till your big family occasion!

Raw or uncooked prime rib may be frozen for up to twelve months.

While cooked prime rib can be frozen for up to six months.

How to Freeze Prime Rib

However, in order to achieve this optimum freezer storage time, the prime rib must be carefully packaged before freezing.

To stop freezer burn and discolorization then I suggest a 3 layer packing.

First covering of airtight seal plastic or freezer thick plastic wrap used.

Second aluminum or tin foil should also tightly wrapped around the plastic layer.

Finally, use a vacuum seal bag and you will have a long-lasting frozen prime rib.

 How To Thaw Prime Rib

When you’re ready to eat your frozen prime rib, defrost it in the refrigerator or at 68 degrees F (room temperature).  This will take 24 to 48 hours depending on the size.You may also speed it up with water. But this is not really the food-safe method because the outside of the beef is at room temperature while the inside is still frozen. So the result means bacteria can grow on the outside while the inside beef is still thawing.

Cook immediately if you use this method and ensure that the interior is at 165F is you have used water.

It is best to use the fridge way.

How Long Can You Keep a Defrosted Prime Rib in the Fridge?

What if you’ve already defrosted your prime rib? Is it still safe in the fridge? If so, how long will it last?

After defrosting (in the fridge), your uncooked prime rib can keep in the fridge for up to five days. While defrosting, place a dish underneath the meat to catch any seeping juice.

How Can I Keep My Raw Prime Rib From Going Bad After Defrosting In The Fridge?

The best way is to endure it is highly wrapped in airtight plastic wrap or similar.

Refrigerating defrosted prime rib for a long time is not recommended since it may change the flavor, quality, and freshness of the meat. Molds may also be introduced accidentally as a result of a temperature shift when the fridge door is opened.