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smoked prime rib
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5 from 2 votes

Smoked Prime Rib

This smoked prime rib recipe brings together the rich tenderness of prime rib with the smoky flavor of the pellet grill. With a horseradish garlic butter crust and a simple reverse sear technique, this smoked prime rib will be your new favorite way to enjoy this indulgent cut of beef!
Prep Time10 minutes
Cook Time4 hours
Resting Time15 minutes
Total Time4 hours 25 minutes
Course: Main Course
Cuisine: American
Keyword: prime rib on pellet grill, smoked prime rib, smoked prime rib recipe, smoked prime rib roast, Traeger prime rib
Servings: 8 people

Ingredients

  • 6-7 pound standing rib roast
  • 3 tablespoons butter softened
  • 2 tablespoons prepared horseradish
  • 2 tablespoons Worcestershire sauce
  • 1 tablespoon dijon mustard
  • 1 tablespoon mayonnaise
  • 4 cloves garlic finely minced
  • 1 tablespoon rosemary finely minced
  • salt and pepper

Instructions

  • Prep the grill. Preheat pellet grill to 225 degrees F with your favorite wood pellets for beef.
  • Make the horseradish rub. Combine softened butter, horseradish, Worcestershire sauce, dijon mustard, mayo, garlic, and rosemary in a medium bowl. Mix together well and set aside.
  • Season the rib roast. Pat the prime rib roast dry with paper towels. Then season all sides of the roast liberally with salt and pepper.
  • Transfer to a wire rack lined baking sheet. Place a piece of aluminum foil over a baking sheet and set a wire rack on top. Place the seasoned roast fat side up on the wire rack. *This allows you to catch the drippings as the roast cooks to use for an au jus.
  • Spread on the horseradish rub. Next, slather on the horseradish rub, taking care to evenly cover all sides of the roast. If you're using a bone-in roast, then you can omit the rub on the bone side. *The recipe for the horseradish garlic butter rub is just the right amount for a 6-7 pound, three bone roast. If your roast is larger than that, you may want to double the recipe.
  • Smoke the prime rib roast at 225 degrees. Place the baking sheet with the rib roast on the preheated grill and close the lid. Smoke the roast until it reaches an internal temperature of about 110-115 degrees F for medium rare, rotating the baking sheet every hour for even cooking. Once the internal temp reaches that range, remove the baking sheet and roast from the grill.
  • Increase smoker temp to 500 degrees to sear. With the roast off of the grill, increase the pellet grill temp to 500 degrees F. When the grill reaches that temp, place the baking sheet with roast back on the grill to sear until the internal temp reaches about 120-125 for medium rare.
  • Rest and serve. Remove the smoked prime rib from the grill and let rest for about 15-20 minutes. The internal temp of the roast will continue to rise during this time, and may rise as much as 5-6 degrees, so be sure to account for that when temping the meat. After the resting period, slice the smoked prime rib roast into steaks about ½" - 1" thick, depending on preference. Serve warm with horseradish sauce or au jus.

Video

Notes

  • Be sure that you take the smoked prime rib off the grill while the grill is heating up to 500 degrees F. If you leave the roast on the grill during that time, then your prime rib roast will overcook before the grill has a chance to reach that perfect searing temperature.
  • When you finish the roast off at such a high temp to get a nice seared crust, you will have more carryover cooking versus finishing it at the lower grill temp of 225 degrees. We took our smoked prime rib off the Traeger grill at a temp of 120 degrees F, and within 5 minutes, the internal temp had already risen three degrees.
  • The ultimate guide of doneness will be internal temperature, as is the case with most smoked or grilled meats, but you can estimate 30-40 minutes per pound for smoking time.
  • Leftover prime rib can be stored in an airtight container in the refrigerator for up to 3 days.