Smoked Prime Rib

Smoked prime rib is one of the most impressive things you can pull off a smoker, and the method is simpler than you think. This recipe starts with a high-heat sear at 500°F (or as high as your smoker will go) to build a dark, crackling crust right away, then drops to 225°F to slowly render the marbling and develop deep smoky flavor all the way through. If you love slow-cooked beef, my braised beef short ribs are another great option.

Why This Recipe Works

• Starting at high heat builds the crust first. The 500 rule creates a foolproof sear. The 500 rule is a well-known method for cooking prime rib where you roast at 500°F for exactly 5 minutes per pound to build a deep, caramelized crust. This recipe uses that same high-heat principle as the starting point, then transitions to low-and-slow smoke at 225°F to finish the cook with even rendering and deep smoky flavor throughout.
• Dropping to 225°F lets the marbling render slowly. After the initial sear, lowering the temperature gives the fat marbling time to melt gently into the surrounding muscle fibers, basting the meat from the inside out and keeping every slice juicy and tender.
• Low-temperature smoke penetrates deep into the meat. Once the temperature drops to 225°F, the surface of the roast absorbs smoke steadily, building a gorgeous smoke ring and deep smoky flavor all the way through.
• Compound butter continuously bastes the roast. As the butter and fresh herbs melt slowly over the surface during the low-and-slow portion, they keep the meat moist and infuse every layer with rosemary, thyme, and oregano flavor.
• Resting is non-negotiable. After smoking, the internal temperature will continue to rise 5 to 10 degrees while the roast rests. Pulling at 125°F and resting for 20 to 30 minutes brings you right to a perfect medium-rare and lets the juices redistribute evenly throughout the roast.

Ingredients Needed

Prime rib does not need a long ingredient list. The quality of the beef does most of the work. Here is a breakdown of what each ingredient does. See the recipe card for exact quantities.

• Standing Rib Roast (Bone-In or Boneless): This is the star of the show. A bone-in rib roast retains more moisture during the long smoke and the bones act as a natural rack. A boneless roast works just as well and is easier to carve. Look for USDA prime or choice grade for the best marbling. Prime grade will be richer and more tender, but choice grade is more widely available and still produces an outstanding result.
• Olive Oil: A thin coat helps the seasoning stick to the surface of the roast and promotes better bark formation during the initial high-heat sear. Melted butter works as a substitute and adds a richer flavor.
• Beef Rub: The rub builds the bark and adds depth of flavor. Use a store-bought blend or mix your own with kosher salt, coarse black pepper, garlic powder, and onion powder. Salt is the most important ingredient here as it draws moisture to the surface, dissolves, and gets reabsorbed into the meat to season it all the way through. We really like the Costco prime beef rub and use it often.
• Fresh Rosemary, Thyme, and Oregano: Mixed with butter to make a compound butter. Fresh herbs bloom much better in fat than dried herbs do, so use fresh whenever you can.
• Unsalted Butter: The base of the compound butter. As it melts over the roast during the low-and-slow portion of the cook, it bastes the roast, keeping it ultra-moist.

How to Make Smoked Prime Rib Step-By-Step

Before you start: Pull the roast from the refrigerator 3 hours before roasting. This is not optional. A cold roast cooks unevenly, and you will not get that consistent rosy center without it.

1. Preheat your smoker to 500ºF or the highest it will go. This will take about 30 minutes.
   
   Pat the roast completely dry with paper towels. Coat the entire surface in olive oil.

2. Then apply your beef rub generously over the top, bottom, and all sides. Press it firmly into the meat so it adheres well and forms a solid crust during the sear.

3. Mix the softened butter with the chopped fresh rosemary, thyme, and oregano until fully combined.

4. Place the roast fat cap down onto your work surface. Using damp hands, press the compound butter evenly over the top of the roast to create the butter blanket that will baste the roast as it smokes.

5. Insert your probe thermometer into the thickest part of the roast.

6. Place the roast fat cap down directly on the grates of the smoker. The fat cap acts as a shield, protecting the bottom of the roast from drying out over direct heat. Meanwhile, the herb butter blanket on top melts down as the roast cooks, basting the surface with flavor and moisture as it goes.
   
   Sear for 5 minutes per pound. A 6-pound roast will sear for 30 minutes. The surface should turn deeply browned and caramelized. This high-heat start is what creates the dark, crackling crust on the outside of the roast.

EXPERT TIP: Keep in mind that larger roasts carry over more than smaller ones. A 2-3 rib roast might climb 5°F after pulling, but a full 7-rib roast can easily rise 10-15°F as the residual heat from the outer layers continues pushing inward. The bigger the roast, the earlier you want to pull it. If you're cooking a big one, consider pulling closer to 110-115°F to land at a perfect medium-rare after resting.

7. Reduce the smoker temperature to 225°F and continue cooking until the internal temperature reaches 125°F. Plan on approximately smoking for 30 to 40 minutes per pound from this point.
   
   Keep the lid closed and let the probe thermometer do the work. Do not open the lid to check on it.

8. Once your roast reaches temp, remove the roast from the smoker and tent it loosely with aluminum foil or place it in a small cooler with the lid cracked so it doesn't lose heat too fast but also doesn't trap steam. Rest the roast for for 20 to 30 minutes.
   

9. The internal temperature will continue to climb during this time, bringing you right to a perfect medium-rare around 130°F.

10. Slice and serve with your favorite side dish.

I gotta say... this roast delivered on all fronts this holiday season. The bark, the juices running across the cutting board, the aroma - everything about it feels like a steakhouse moment right in your backyard. There are so many different ways to cook prime rib, but smoking gives you the most delicious results. No stress. No overthinking. Just slow heat, good seasoning, and letting the meat shine. I like to serve this gorgeous prime rib with a side of Creamy Mashed Potatoes, Honey Glazed Carrots, and a smear of my delicious Dijon Cream Sauce.

Tips & Tricks For Success

• Let the roast sit at room temperature before smoking. This promotes even cooking from edge to center. Skipping this step is one of the most common mistakes and leads to an overcooked exterior with a cold center.
• Always cook with indirect heat on the center rack of the grill. Placing the roast too close to the heat source will dry out one side.
• Place the roast fat cap down directly on the grates of the smoker. The fat cap acts as a shield, protecting the bottom of the roast from drying out over direct heat. Meanwhile, the herb butter blanket on top melts down as the roast cooks, basting the surface with flavor and moisture as it goes.
• Use a digital meat thermometer or leave-in probe. Don't guess. Cooking by time alone is the fastest way to overshoot your target temp.
• Keep in mind that larger roasts carry over more than smaller ones. A 2-3 rib roast might climb 5°F after pulling, but a full 7-rib roast can easily rise 10-15°F as residual heat from the outer layers continues pushing inward. The bigger the roast, the earlier you want to pull it, closer to 110-115°F to land at a perfect medium-rare after resting.
• When slicing, use a long sharp knife and glide through the meat. Don't saw. Sawing shreds the fibers and pushes out juices.
• Always rest the roast before slicing. Cutting too early sends all those juices onto the cutting board instead of staying in the meat.
• Rest the roast in a cooler with the lid slightly cracked, or tent loosely with aluminum foil. Either way, don't seal it tight. Trapped steam will soften the bark you worked so hard to build.

Frequently Asked Questions