How to cook 3.5 lb prime rib roast

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Cook up an unforgettable holiday dinner with our easy Boneless Prime Rib recipe! Only 5 minutes of prep and 3 simple ingredients: beef, salt, and pepper. This is the best boneless rib roast that's so simple to make and packed with flavor!

• Best Prime Rib Recipe
• Boneless Rib Roast Ingredients
• How to Season Prime Rib
• How to Cook a Prime Rib
• Prime Rib Recipe Tips
• Boneless Prime Rib Cooking Time
• Prime Rib Temperature
• How Long to Thaw a Boneless Rib Roast
• How to Make Au Jus for Prime Rib
• Prime Rib Recipes FAQs
• Best Way to Reheat a Prime Rib Roast
• Best Prime Rib Sauces
• Best Prime Rib Recipes
• 📌 Pin it for later!
• 📋 Recipe
• 💬 Reviews

When we say this is one of the easiest rib roast recipes you will ever make, we mean it! This recipe is a showstopper and just perfect when served over creamy mashed potatoes or instant pot mashed potatoes.

This boneless rib roast recipe is as delicious as it gets. Using just salt, pepper, and a beautifully marbled cut of beef, we are going to show you how to make the juiciest, most tender rib roast. It's perfect for serving over any holiday meal.

This was my first time making a boneless prime rib and it turned out perfectly. My family was so impressed. Thank you for the step-by-step recipe. I will never make it any other way!

Eva on Pinterest

Boneless Rib Roast Ingredients

• Boneless rib roast
• Sea salt
• Freshly cracked black pepper

The key to cooking a beautiful roast is picking a cut of beef with perfect marbling.

Marbling refers to the white lines of fat running through the beef. The better the marbling, the more flavor your roast will have! Look for fine, web-like marbling.

TIP—Remove your roast from the refrigerator 30 minutes before cooking it and allow it to come to room temperature. This way, it will cook evenly!

How to Season Prime Rib

A rib roast is so flavorful that we like to keep our seasoning simple: just salt and pepper. We recommend using sea salt. The taste and texture of sea salt are so perfect and give it the perfect crust. Our prime rib rub recipe works well, too. I especially love it on grilled prime rib.

If you like, you can also add herbs. Rosemary is a perfect choice. Chop up rosemary and pair it with salt and pepper to season your roast for an extra tasty prime rib recipe.

How to Cook a Prime Rib

1. Preheat your oven to 450°F and pat your boneless rib roast dry with paper towels.
   
   
   
   Generously season your roast with sea salt and black pepper. Give it a good coating.
   
   
2. Place the roast fat-side up on a pan with a roasting rack. Add it to the oven and cook for 15 minutes at 450°F.
   
   
3. Reduce the temperature to 325°F and cook for an additional 1 hour and 40 minutes (4 lb. roast).
4. Once time is up, move the beef to a cutting board and tent it with foil loosely. Allow it to rest for 15 minutes under the foil.
5. After resting, carve the beef against the grain for the best results. Serve, and enjoy!
   
   

Prime Rib Recipe Tips

• Use a meat thermometer! This is a must for roast beef recipes to achieve your perfect desired degree of doneness every time.
• Allow your roast to come to room temperature before placing it in the oven. This way, it will cook evenly throughout.
• Use a roasting pan with a rack so air can circulate around the whole roast.
• Let your roast rest!Once it's done roasting, tent your beef with foil and let it sit for 15 minutes before carving.
• Slice against the grain. This is vital! The grain refers to the lines running through the beef. Slice against the grain for the most tender slices.

Boneless Prime Rib Cooking Time

Cooking time will depend on the size of the roast:

• 4 lb. roast: 15 minute sear + 1 hour 40 minutes cook time
• 5 lb. roast:15 minute sear + 1 hour 45 minutes cook time
• 6 lb. roast: 15 minute sear + 1 hour 50 minutes cook time

Prime Rib Temperature

For best results, always use a meat thermometer to measure the internal temperature. Follow our Prime Rib Temperature Chart.

How Long to Thaw a Boneless Rib Roast

Place your rib roast in a pan in the refrigerator for at least two days before you plan to cook it so it thaws completely. For larger roasts, allow an additional day. Bring it to come to room temperature, then follow the roasting instructions!

How to Make Au Jus for Prime Rib

You can easily make au jus with drippings to use for this recipe. Follow these instructions to make your own au jus: Best Au Jus for Prime Rib.

Prime Rib Recipes FAQs

How long will prime rib last in the refrigerator?

It will last 5 to 7 days in the refrigerator. For best results, store with au jus or beef gravy drizzled over the top. This will help keep it moist.

What tools do I need to roast a prime rib?

Paper towels to pat the roast dry
Baking sheet with a roasting rack
Your oven
Aluminum foil to tent the roast once it's done cooking
Cutting board and knife

Best Way to Reheat a Prime Rib Roast

1. Preheat your oven to 250°F.
2. Add leftover rib roast to a roasting pan with leftover au jus, beef gravy, or beef stock, and cover with foil.
3. Place in the oven for 10 minutes, or until heated through.

Best Prime Rib Sauces

• Horseradish Sauce
• Au Jus
• Red Wine Reduction Sauce
• Garlic Butter Sauce

Use the sauces to make an amazing Leftover Prime Rib Recipe!

Best Prime Rib Recipes

• Slow Cooked Prime Rib
• Sous Vide Prime Rib
• Air Fryer Prime Rib
• Instant Pot Prime Rib Roast
• Standing Rib Roast
• Smoked Prime Rib

Try more of my Best Prime Rib Recipes for the holidays! Start off with my tips on The Best Way to Cook Prime Rib and end with the best Prime Rib Side Dishes.

Other holiday favorites - My smoked brisket recipe will have your entire family drooling when you make it. It takes a bit of time on the smoker but boy is it worth it. If you love smoking, you will also love my smoked beef short ribs!

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📋 Recipe

Boneless Prime Rib Roast Recipe

Our boneless prime rib roast recipe is easy, tender, and so delicious! A perfect holiday meal.

Prep Time5 mins

Cook Time1 hr 40 mins

Total Time1 hr 45 mins

Course: Prime Rib Recipes

Cuisine: American

Keyword: boneless prime rib recipe, boneless rib roast, prime rib recipe, prime rib recipes

Servings: 8

Calories: 774kcal

• Oven

• 4-6 lb. boneless prime rib roast
• 1 Tbsp. sea salt
• 1 tsp. black pepper
• OR our prime rib rub
• au jus

• Preheat your oven to 450°F and pat your boneless rib roast dry with paper towels. Generously season your roast with sea salt and black pepper. Give it a good coating.

  

• Place the roast fat-side up on a pan with a roasting rack. Add it to the oven and cook for 15 minutes at 450°F. Once 15 minutes is up, reduce the temperature to 325°F and cook for an additional 1 hour and 40 minutes (4 lb. roast).

  

• Once time is up, move the beef to a cutting board and tent it with foil loosely. Allow it to rest for 15 minutes under the foil. After resting, carve the beef against the grain for best results. Serve, and enjoy!

  

Boneless prime rib cooking time:

• 4 lb. roast: 15 minute sear + 1 hour 40 minutes cook time
• 5 lb. roast: 15 minute sear + 1 hour 45 minutes cook time
• 6 lb. roast: 15 minute sear + 1 hour 50 minutes cook time

Tips for cooking a perfect prime rib roast:

• Use a meat thermometer! This is a must for roast beef recipes, and especially for prime rib recipes, to achieve your perfect desired degree of doneness every time.
• Allow your roast to come to room temperature before placing it in the oven. This way, it will cook evenly throughout.
• Use a roasting pan with a rack so air can circulate around the whole roast.
• Let your roast rest! Once it’s done roasting, tent your beef with foil and let it sit for 15 minutes before carving.
• Slice against the grain. This is vital! The grain refers to the lines running through the beef. Slice against the grain for the most tender sliced prime rib.

Serving: 1g | Calories: 774kcal | Protein: 51g | Fat: 62g | Saturated Fat: 25g | Polyunsaturated Fat: 29g | Cholesterol: 188mg | Sodium: 1015mg