Barbecue Prime Rib

Introduction

Smoking a prime rib low and slow produces meat so tender it barely needs a knife, and finishing it on a hot grill adds the crust that makes it memorable. This recipe uses a two-stage cook: a long smoke at 200°F to reach a precise internal temperature, then a quick sear to develop color and char. Plan for roughly 3 to 4 hours of total time depending on roast size and smoker performance.

Recipe Details

• Prep Time: 10 minutes
• Cook Time: 180–240 minutes
• Total Time: 190–250 minutes
• Servings: 6–8

Ingredients

• 1 ea. 4-bone standing rib roast, prime grade
• Prime Rib seasoning, as needed
• Canola oil, as needed
• Large mesquite chunks

Instructions

1. Coat roast with oil. Shake on seasoning and massage into meat.
2. Place dry mesquite chunks into firebox of a 250°F smoker.
3. Insert a probe thermometer into center of roast and set for 118°F.
4. Place roast into smoker and lower heat to 200°F. Cook until internal temperature is achieved, changing mesquite as needed.
5. Remove and grill on high heat for 7 minutes or until desired crust is achieved.
6. Remove and let rest 10 minutes. Serve.

Variations

Higher final temperature: Set the probe to 125°F for medium-rare or 135°F for medium. The roast will carryover-cook another 5°F while resting, so pull it 5°F before your target.

Hickory or oak instead of mesquite: Use the same volume of hickory or oak chunks for a milder smoke flavor that won’t overpower the beef.

Finish in a hot oven: If you don’t have access to a grill, preheat your oven to 500°F and sear the roast for 5–7 minutes until the exterior is deeply browned, rotating halfway through.

Dry brine the night before: Rub the roast with salt and seasoning, then refrigerate uncovered for 12–24 hours. This dries the surface and improves the crust. Pat dry before oiling and smoking.

Add a butter baste at the end: In the last 15 minutes of smoking, brush the roast with melted butter mixed with fresh thyme and garlic. This adds richness without extending cook time.

Tips for Success

Use a reliable probe thermometer: The 118°F target is precise; a wireless or instant-read thermometer ensures you pull the roast at the right moment and avoid overcooking such an expensive cut.

Change the mesquite before it fully burns: Replace chunks when they’re mostly ash but still smoldering; this keeps smoke consistent and prevents acrid flavor from heavy ash buildup.

Don’t skip the rest: The 10-minute rest allows carryover cooking to finish and lets juices redistribute into the meat. Cut into it too soon and you’ll lose moisture to the plate.

Let the roast come to room temperature first: Remove it from the fridge 45 minutes before oiling and seasoning. A cold center takes longer to reach temperature and may cook unevenly.

Watch the grill sear closely: Seven minutes is approximate. The crust forms fast on high heat; rotate or move the roast if one side is charring too quickly, and pull it when the exterior is dark brown, not black.

Storage and Reheating

Refrigerator: Slice the roast after it cools, store in an airtight container, and keep for up to 4 days. Sliced roast dries out faster than a whole piece.

Freezer: Wrap the whole cooled roast tightly in plastic wrap, then foil, and freeze for up to 3 months. Thaw in the fridge overnight before reheating.

Reheating: Warm sliced roast gently in a 300°F oven, covered with foil, for 10–15 minutes until heated through. Alternatively, warm it in a skillet over medium-low heat with a splash of beef broth to prevent drying. Avoid microwaving, which toughens the meat. A whole roast can be reheated at 250°F, covered, for 20–30 minutes until the center reaches 110°F.

FAQ

How do I know when the roast is ready if I don’t have a probe thermometer?

Use an instant-read thermometer inserted into the thickest part of the meat, away from bone. Check it every 30 minutes once you’ve been smoking for about 2 hours. The temperature will climb slowly at first, then faster near the end.

Can I use a different cut of beef?

Yes, but timing and results will differ. A bone-in ribeye or strip roast works similarly but cooks faster (2–2.5 hours). Boneless cuts cook slightly faster and benefit from tying with twine to hold their shape. Always adjust the thermometer target based on your desired doneness.

What if my smoker runs hot and won’t hold 200°F?

Adjust your approach: open vents more to cool it, place a water pan inside to moderate temperature, or wrap the roast loosely in foil after the first hour to slow the cook. Monitor internal temperature closely, as a hotter smoker will finish the roast sooner.

Can I prep the roast the day before?

Yes. Coat it with oil, apply seasoning, cover loosely with plastic wrap, and refrigerate. Remove it from the fridge 45 minutes before smoking so it reaches room temperature. This step actually helps the seasoning adhere and penetrate the meat.