Rib roasts are a special treat I enjoy serving a few times a year. Large, premium cuts can feel intimidating to cook, but don’t be discouraged. An oven-baked prime rib roast is straightforward when you follow a few reliable steps and use the right tools.
Oven-Baked Prime Rib Roast
Rib roasts are simple to prepare, but because they are an expensive cut, it’s worth taking the time to get them right. With a few easy techniques you can consistently deliver a tender, flavorful roast that showcases the meat.
I prefer bone-in roasts because the bones add depth to the au jus as the roast cooks. If you like a cleaner presentation, ask your butcher to remove the bones and tie them back on—this creates a natural rack for roasting while still letting you capture the extra flavor.
If you do use a boneless roast, you can place the bones in the bottom of the pan while the roast cooks to enrich the pan juices, then strain them into your au jus before serving.
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Recipe Shopping List
Here are the key items to have on hand. For exact measurements and a printable summary, see the recipe card below.
- Rib roast – Choose the best quality you can afford; bone-in is preferred for flavor.
- Simple rub – A blend of salt, pepper and aromatics like garlic and onion powder works beautifully. A smoked salt or SPG-style blend adds depth without masking the beef.
- Instant-read thermometer – This is essential. Your main job with prime rib is to avoid overcooking. A probe thermometer that stays in the roast while it rests takes the guesswork out of timing.
How Long Does It Take To Cook A Rib Roast?
Cooking time depends on several factors: the roast’s weight, your oven’s behavior, and the final internal temperature you prefer. For reliable results, use a thermometer and roast by internal temperature rather than by clock alone.
For medium-rare aim for an internal temperature of about 120–125°F when you pull the roast from the oven; it will rise a few degrees while resting to reach 130–135°F. As a general guideline, after an initial high-heat sear, plan on roughly 15 minutes per pound at a moderate oven temperature for medium-rare, but always confirm with your thermometer.
What Sides Go Best With Prime Rib?
Prime rib calls for sides that feel special but let the beef shine. Classic potato preparations, bright salads, and a rich starch are all excellent companions. Below are suggestions that pair well with a standing rib roast.
Potato Sides for Prime Rib
- Parmesan potato stacks – elegant and crisp-topped, they complement the roast’s richness.
- Loaded baked potatoes – hearty and familiar, ideal for a casual celebration.
- Smashed potatoes – crispy edges with fluffy centers make a satisfying contrast.
- Garlic mashed potatoes – creamy and comforting, perfect for saucing with au jus.
Salads
- Classic Caesar – crisp romaine, tangy dressing, and crunchy croutons.
- Greek salad – fresh vegetables and bright vinaigrette offer a refreshing counterpoint.
Rice sides
- Mushroom risotto – silky and savory, great with beef’s umami flavors.
- Wild rice pilaf – nutty and textured, a lighter starch option.
Leftover Prime Rib Ideas
A large roast is a wonderful source of leftovers. Sliced or shredded prime rib transforms into quick, delicious meals. Here are a few ideas to make the most of any leftovers:
- Roasted bones for stock or smoked bones – simmer bones for a deeply flavored beef broth or smoke them for added intensity.
- Prime rib breakfast sandwich – thin slices warmed and tucked into eggs and cheese.
- French dip sandwiches – warm slices served with au jus for dipping.
- Beef noodle or barley soups – add chopped roast to soups for a rich finish.
- Cold roast sandwiches or pinwheels – perfect for lunches or parties.
Pin For Later
Oven-Baked Prime Rib Roast
Prime rib is a special centerpiece. Follow these clear steps to ensure a juicy, perfectly cooked roast and a flavorful au jus.
15 minutes
2 hours
2 hours 15 minutes
Ingredients
- 4–6 pound rib roast (bone-in preferred)
- ½ cup avocado oil or another neutral high-heat oil
- 2 teaspoons minced fresh garlic
- 1 teaspoon dried oregano
- 1½ tablespoons kosher salt
- 2 teaspoons onion powder
- 1 teaspoon garlic salt
- 1 teaspoon black pepper
Instructions
- Remove the roast from the refrigerator and let it stand at room temperature for about 1 hour before cooking. This helps it cook more evenly.
- Combine the oil, minced garlic, oregano, kosher salt, onion powder, garlic salt, and black pepper. Rub the mixture all over the roast, coating the top and sides thoroughly.
- Place the roast in a roasting pan, bone-side down (if using bones) and fat-side up. Roast in a 500°F oven for 15 minutes to develop a crust, then reduce the oven temperature to 325°F.
- Continue roasting about 15 minutes per pound for medium-rare, but rely on an instant-read or probe thermometer. Remove the roast from the oven when the internal temperature reaches 120–125°F for medium-rare; it will rise another 5–10°F as it rests.
- Let the roast rest for 15–20 minutes before carving. While it rests, spoon off all but 2–3 tablespoons of fat from the pan, place the pan over medium-high heat on the stovetop, and add 1½ cups beef broth and 1½ cups red wine. Simmer and whisk to deglaze the pan and lift the browned bits into the liquid. Simmer until the au jus is hot and slightly reduced, then serve alongside the sliced roast.
Notes
If some guests prefer their beef more done, you can briefly warm sliced portions in the hot au jus before serving to raise the temperature without overcooking the remainder of the roast.
Nutrition Information
Amount Per Serving
Calories: 639 • Saturated Fat: 21g • Cholesterol: 109mg • Sodium: 1360mg • Protein: 24g
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