Want prime rib without buying a huge roast? Learn how to cook a small boneless prime rib ribeye roast—the same juicy, tender flavor in a 2–4 lb rib roast. With a simple garlic-butter crust and an easy time-and-temp method, it’s perfect for Christmas or any smaller holiday meal.
Quick Answer: ⏱️ How Long to Cook a Small Boneless Prime Rib Roast
Sear 20 minutes at 500°F, then roast at 325°F until the internal temperature reaches 130°–135°F for medium-rare. Always check early.
Approximate Times (Including Sear):
- 2 lb: 65–75 minutes
- 3 lb: 85–105 minutes
Rule of Thumb: About 15–20 minutes per pound for larger roasts, but small 2–4 lb roasts usually take longer per pound than larger ones.
Jump To (scroll for more)
- ❤️ Why You'll Love This Recipe
- 🤔 Terminology: Prime Rib vs Ribeye
- 🐄 Ingredients
- 👨🍳 Quick Overview: How to Cook a Small Boneless Prime Rib Roast
- ⏰ How Long to Cook a Small Prime Rib (Time & Temperature Guide)
- 👍 Pro Tips for Perfect Prime Rib
- 🥣 Making Au Jus from the Drippings
- 🛒Shopping
- 📋 Related Recipes
- 🔥 What to Do About Smoking Ovens
- 🍽️ What to Serve with Prime Rib
- ❄️ Storage and Reheating Leftovers
- ❓FAQs
- 📖The Recipe Card
Featured Comment by Suzi :
⭐⭐⭐⭐⭐"OMG! My first time making a rib roast, and it is beyond delicious. An almost 3 lb roast cooked perfectly according to your directions. I may eat the entire thing. Thank you!"
❤️ Why You'll Love This Recipe
- Holiday flavor, home-cook easy: Tender, juicy beef with a garlic-butter crust that feels fancy without the stress.
- Sized for smaller gatherings: Perfect for 2–4 lb roasts — just enough for a family dinner or a cozy celebration.
- Bone-in prime rib: Cooks the same using this method, but may take a little longer.
- Beginner-friendly: Simple steps, clear temps, and a thermometer are all you need to get it right.
🤔 Terminology: Prime Rib vs Ribeye
The names can be confusing. A rib roast may be bone-in or boneless, and labeled prime rib, ribeye roast, or simply rib roast — they are all the same cut of beef.
Rib Roast = Prime Rib Roast = Ribeye Roast
Boneless and bone-in can apply to any of the three names.
Standing Rib Roast = Bone-in Rib Roast
And don’t be fooled — prime rib refers to the cut of meat, not the USDA grade. Choice-grade roasts are most common and still excellent.
🐄 Ingredients
- Rib Roast – 2 to 4 pounds, boneless. Bone-in also works. Prime grade is excellent if available, but Choice is more common and still great. “Prime rib” refers to the cut, not the USDA grade.
- Fresh garlic — crushed or minced.
- Butter — softened for mixing with garlic.
- Salt and pepper — to taste.
👨🍳 Quick Overview: How to Cook a Small Boneless Prime Rib Roast
1. Prep: Rest the roast at room temperature, preheat the oven to 500°F, and prep the pan and garlic butter.
2. Slather & season: Spread the garlic-butter mixture over all sides and season with salt and pepper.
3. Sear, then roast: Roast 20 minutes at 500°F, reduce to 325°F, and cook to 130°–135°F for medium-rare.
4. Rest & slice: Tent with foil for 15–20 minutes, then slice across the grain.
✅ Pro Tip: Temp rises 5°–10° while resting — cook to temp, not time.
👇 Scroll down for the printable recipe card and complete step-by-step photo instructions—or keep reading for temperature guidance, au jus, and tips.
⏰ How Long to Cook a Small Prime Rib (Time & Temperature Guide)
Rule of Thumb: About 15–20 minutes per pound for larger roasts, but small 2–4 lb roasts usually take longer per pound, and larger ones tend to fall toward the lower end of the range. Always check early.
Doneness Guide (for a 2-lb boneless roast):
- Rare – cold red center (125°-130°F): About 60-65 minutes total (20 min sear + 40-45 min roast).
- Medium-rare – warm red center (130°-135°F): About 65-75 minutes (20 + 45-55 min).
- Medium – pink and firm (140°-150°F): About 75-85 minutes (20 + 55-65 min).
- Medium-well / Well: Not recommended — the roast will dry out.
Thinner roasts cook faster; bone-in roasts usually need a little extra time since bones absorb heat.
Size Adjustments:
- 2 lb roast: Use the chart above; check temp early.
- 3 lb roast: Add 20–30 minutes; check early.
- 4 lb roast: Add 25–40 minutes; check early.
✅ Pro Tip: Cooking times are for planning only — always use a thermometer and cook to final internal temp, allowing a 5°–10° rise while resting.
👍 Pro Tips for Perfect Prime Rib
- Rest before roasting: Let the roast sit at room temperature 30–90 minutes for more even cooking.
- Use a thermometer, not the clock: Roasts vary; always check temp early.
- Fat side up: Whether boneless or bone-in, keep the fat cap on top so it bastes as it cooks.
- Use a rack if you can: Helps fat drain and heat circulate, but the recipe still works without one.
- Don’t skip the final rest: Tent with foil 15–20 minutes before slicing. This locks in juices.
- Meat quality matters: Prime grade is outstanding, but Choice is more common and still excellent. What matters most is how you cook it.
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🥣 Making Au Jus from the Drippings
Making homemade au jus is easy. Use a saucepan on the stovetop.
- ¼ cup meat drippings (drain off the fat if you prefer; if not available, use extra broth)
- 2 cups beef broth (if you placed broth under the meat to prevent smoking while roasting, you can reuse it here)
- 1 tablespoon Worcestershire or soy sauce — or 2–4 tablespoons bold red wine
- Salt and cracked black pepper to taste
Simmer on low heat for 10–15 minutes until slightly reduced.
👉 If you want to thicken the au jus, near the end of simmering, slowly whisk in a slurry of cold water and 2 teaspoons of cornstarch.
🛒Shopping
Here are some suggestions I like, but you can find many more good products that will work at your local big-box store. All links below are affiliate links, meaning I make a small profit from your purchases. This commission does not affect your price. We are a participant in the Amazon Services LLC Associates Program. As an Amazon associate, I earn from qualifying purchases.
Maverick XR-50 4 Probe Remote Thermometer
Oven Safe Racks
Thermapen™ One from Thermoworks™
ThermoPro TP19 Instant Read Thermometer
📋 Related Recipes
Looking for more Holiday entrées? Try these:
Grilled Ribeye Steaks
Grill juicy, tender ribeye steaks with this beginner-friendly gas grill method. No marinade—just salt, heat, and a few smart steps.
🔥 What to Do About Smoking Ovens
Expect smoke during the 500° sear — fat from the roast and butter will hit hot metal.
Ways to reduce it:
- Pan liquid (best option): Add beef broth (great if making Au Jus) or water under the rack so drippings hit liquid (212°) instead of the hot pan.
- Lower sear temp: Try 450° instead of 500° — less smoke, nearly the same crust.
- Use oil instead of butter: Higher-temp oils smoke less, but flavor suffers.
- Vent it out: Fans on, windows open, accept the smoke.
- Skip the sear: Go straight at 350°. Cooking time will be longer, and you’ll get more gray edge around the pink center.
🍽️ What to Serve with Prime Rib
Pair your roast with a fresh salad and roasted vegetables like Baked Green Beans with Bacon or Roasted Parmesan Asparagus . For a starch, Roasted Small Potatoes work beautifully. And don’t forget a crusty loaf like Julia Child's French Bread.
For a wine pairing, we prefer Cabernet Sauvignon, Merlot, or Pinot Noir.
❄️ Storage and Reheating Leftovers
Store leftovers tightly covered in the refrigerator for 3–4 days, or freeze airtight for 3–4 months.
To reheat, thaw overnight in the refrigerator if frozen. Warm in the oven, covered with moisture such as au jus or beef broth to prevent drying out.
❓FAQs
Both are excellent. Bone-in may add a touch more flavor and moisture. Boneless cooks more evenly, has more surface area for the garlic butter, and is easier to carve. If you prefer bone-in, use the same method and simply allow a bit more roasting time.
Plan on about ½–¾ pound of boneless per serving. Add a little more for big appetites or fewer sides. For bone-in, add 20%+, for waste, so about a pound± per serving.
Slice across the grain into ½- to ¾-inch thick pieces. Think of it like cutting round slices from a log for even, juicy servings.
📖The Recipe Card
Small Boneless Prime Rib (Ribeye) Roast
Video Slideshow
Ingredients
- 2-4 pound boneless rib roast
- 3 cloves garlic, crushed or minced
- 3 tablespoons butter, softened
- kosher salt and freshly ground black pepper, to taste
- Beef broth (optional, to prevent oven smoking or for au jus)
Step-by-Step Instructions
- Rest & preheat: Let roast rest at room temperature for 30–90 minutes. Preheat oven to 500°. Lower rack so roast is centered in the oven.
- Make garlic butter: Mix 3 tablespoons of softened butter with 3 cloves of crushed garlic. Poke 15-20 half-inch holes into the roast with a knife.
- Slather and season: Rub garlic butter all over the roast, pushing some into the holes—season with salt and pepper.
- Pan & rack prep: Set a rack (optional but recommended) in a roasting pan, then spray it with cooking spray. Place the roast on the rack, fat side up.
- Sear, then roast: Sear at 500° for 20 min. Reduce the oven temperature to 325°F and continue cooking until the desired internal temperature is reached, 45–90 minutes, depending on the roast size and desired doneness. Start checking the temp early. Temp will rise another 5°–10° after removal.Start checking the temp early, and check a few times — roasts can cook faster than you expect. Remember: temp will rise another 5°–10° after removal.
- Rest & carve: Tent loosely with foil for 15–20 minutes. Slice across the grain. Serve (au jus optional—see the post).
Recipe Notes
Pro Tips
- A reasonable estimate of the size of the roast is ⅓ to ½ pound per serving.
- Check the post for approximate cooking time for various weights and doneness.
- Never cook by time alone. Always check with a meat thermometer a few times early. A continuous remote thermometer is recommended.
- If your oven smokes, see the troubleshooting tips in the full post.
- Homemade Au Jus instructions are in the post.
- Leftovers: refrigerate up to 4 days or freeze 4 months. Reheat in the oven with a splash of broth or au jus.
Your Own Private Notes
To adjust the recipe size:
You can adjust the number of servings above; however, only the amount in the ingredient list is adjusted, not the instructions.
Nutrition Estimate (may vary)
Editor's Note: Originally published September 17, 2017. Updated with expanded options, refreshed photos, and a table of contents to help navigation.
Lindsay says
Did you take the meat out of the fridge and let it come to room temp before cooking? Excited to try your recipe today!
DrDan says
Hi Lindsay,
Welcome to the blog.
Resting to room temperature is not really needed here. If you want "well done" (and nobody does) then resting at room temp for 30 minutes would be helpful in obtaining the final internal temperature.
Have a good dinner.
Dan
Lindsay says
Thank you! The rarer the better for us! Thanks for your prompt response! Merry Christmas!
Karen E Holcomb says
Hey, I am so happy that I found your recipe again. It's been a year since I used it last and it took about 45 minutes surfing to find it this morning. While my riast is much bigger this year, I'm confident I can adjust. Definitely going to bookmark the page this time. Merry Christmas!
Faith K Beasley says
Just throwing this put there as a helpful tip, if you ask your butcher for a rib roast closer the the strip side then the chuck side you won't have that knot of fat in the middle of your roast.
DrDan says
Hi Faith,
Welcome to the blog.
Thanks for the tip. I believe it is also more marbled. So good in every way.
Happy Holiday and thanks for the note.
Dan
Lenore says
Hi—-was that coventional 500 or convection? I have an electric oven ( dislike it very much, but in Fl and unless running my own gas line.....) and things don’t seem to crisp too well without convection. Planning on making a small roast for Christmas.
Btw: love your recipes. The seared strip steak one of my favs.
DrDan says
Hi Lenore,
Welcome to the blog.
That is 500 degrees conventional not convection.
Watch for the smoking issues. If you are not used to high-temperature ovens, take it up to 500 degrees before the big day to see if it smokes.
Have a good holiday.
Dan
Mary Savage says
What do you use, or what do you suggest for au jus/gravy? Recipes?
DrDan says
Hi Mary,
Welcome to the blog.
For a clear au jus, I would use 2 cups of a good beef broth/stock to the drippings assuming there is not a lot of fat. You can use a fat separator if needed. Add a teaspoon of soy sauce to pop the beef taste some and add salt and pepper to taste. Be careful with the salt since the soy sauce is high in sodium.
Some people want more of a gravy. See https://www.101cookingfortwo.com/how-to-make-gravy-101/ for two methods.
Hope that helps.
Dan
Bill says
I do enjoy beef above other meats but cooking a beef roast of any kind is problematic for me. I enjoy my beef at medium rare. Even medium isn’t an enjoyable taste of beef. My wife is the opposite, no red at all, or she won’t eat it, well done or none.
I don’t want to waste a good rib roast by either over or under cooking, so I don’t cook them. What I’m thinking of trying is to cook a rib roast to medium rare then after resting, slice her portion, return that portion to the oven until it reaches her desired well done.
What are your thoughts?
Thanks!
Bill
DrDan says
Hi Bill,
Welcome to the blog.
I had a similar but not quite as severe problem yrs ago for large holiday meals. My solution at that time was to cook whole large beef tenderloins. The ends, and several inches in, were medium then tapered down to medium rare. But that was a big piece of meat. The key was to cook at high temps but not too long. The ends and outside of the middle cooked but the middle not so much.
This will work somewhat with this smaller rib roast but not as well.
Your plan to cook her portion after cutting will "work" but the issues I see are you will lose a lot of juices. So her's will be dry. And you will be eating at totally different times.
But considering how far apart your tastes are, I would suggest rib eye steaks or filets. You can control the cooking much easier with better results for both of you.
Hope that helps.
Dan
kiloran greenan says
Sensational! First time I tried a bone in ribeye roast and your instructions were spot on. I started with 450 oven, added water to just cover roasting pan, after 20 min. reduced to 325 for 45 min - came out a perfect medium rare. I was nervous because the roast was only 2 1/4 pounds. I also appreciated all the information you provided about the cut of beef and the "difference" between prime rib and ribeye. Many thanks! It's a keeper.
DrDan says
Hi Kiloran,
Welcome to the blog.
Glad it worked so well for you and thanks for the note.
Dan
Heidi says
Why does your instructions say to raise the time in the oven for higher temperatures? ("an additional 45 minutes for 130 degrees, 55 minutes for 140 and 60 minutes for 145."
DrDan says
Hi Heidi,
Welcome to the blog.
You start at 500 then decrease to the oven temp to 325. The part you are referring to is about the final internal temperature you want. So to get to 145-degree internal temp it takes about 60 minutes more but as always, times are provided for estimates, cook to the final internal temperature you want.
Hope that is clear.
Dan
Roz says
I don't have real butter. Would margarine do??
DrDan says
Hi Roz,
Welcome to the blog.
It will "work" but not be as good. Considering what you paid for the ribeye, spring for the butter.
Dan
Ros says
I keep this recipe bookmarked. It never fails. I do start it a little cooler (450) and then lower the temp as directed. This seems to keep the smoke down and it still gets nice and browned and crispy on the outside. I use a probe thermometer with a beeper, so when it hits 128, I'm alerted. This way, I can do any size roast and let the thermometer do the work! Thanks for the great recipe.
DrDan says
Hi Ros,
I do love my remote thermometer. Thanks for the suggestion and the note.
Dan
Erika says
Excellent! I had a 2.3 lb standing rib roast. I chewed on the bone as soon as it rested. Sooo good. How can you lose with that much beef and butter?
Leslie says
Made roast last Friday, per recipe, did not have any smoke problems. 5 star review, I also made your au-graten potato recipe and stove top green bean (also 5 star recipes). I got my menu ideas by looking at the first picture, would love it if you always posted pictures with side dishes or give serve with suggestions. My husban and and friends loved this meal thanks so much
DrDan says
Glad they are working well for you and you solved your oven issue at least for this meal. I'm a little surprised you had no smoke.
My side dishes tend to be boring so I never mention them. Plus, I have very little imagination. How many times can you say baked or mashed potatoes and green beans (grandpa's favorite)? Here I did have scalloped potatoes. I need to do more sides...
Leslie says
Thanks for the advice, may bring roast & cook at friends house.
Leslie says
I just purchased a beautiful roast (expensive) but my oven decided to act up! How do I convert this recipe for a 3 burner gas grill (plan on making the roast this Friday )? Thank you, Leslie
DrDan says
Hi Leslie,
You can probably do it on a grill, I suspect the best way is indirect heat similar to how I cooked the whole chicken a few months ago. https://www.101cookingfortwo.com/grilled-whole-chicken-on-a-gas-grill/
Now, this is a total guess on my part. I would set up the grill like the chicken then sear for 5 minutes per side on the hot side then put it the indirect side fat side up. Probably rotate after about 30 minutes. Then watch the internal temperature.
Now realize I have not done this or any beef like this but I was planning a Tri-Tip roast and this is what I had in my mind to do. It may or may not work well. It is your expensive meat and a company meal we are talking about. How do they feel about Pizza if it doesn't work... You may want to Google for somebody who as actually done this.
Dan
Melody says
You're killing me! The roast looks delicious! Say what? I've just developed a serious allergy to beef - my favorite special occasion treat. Have you ever heard of this?
DrDan says
Sorry about that...
In over 40 yrs in medicine, I have never had one but it is not impossible. Be sure you are seeing a board-certified allergist for confirmation. Food allergies are very tricky to be accurate about and there are lots of newer things the allergist can do.
Yvonne says
I have heard of sudden red meat allergies being caused by a kind of tick bite. Might be worth asking for testing. Best of luck.
Lara says
We have made this cut of roast on a rotisserie over a gas grill. Outstandingly delicious!!