Pork Loin Pellet Grill Recipe: Smoke-Infused Tenderness in Every Slice

There’s nothing quite like the aroma of hickory smoke wrapping around a perfectly cooked pork loin. This pellet grill method delivers tender results every time with minimal effort.

I’ve refined this technique over years of competition cooking. The key is maintaining a consistent 225°F temperature and letting the smoke work its magic slowly.

Ingredients for Pork Loin Pellet Grill

Quality pork loin and a handful of pantry spices create exceptional pellet grill results.

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The pork loin quality is paramount. Costco or Whole Foods offer consistent marbling and size for even cooking. Choose a center-cut piece with a fat cap you can trim yourself—this ensures uniform thickness. Hickory pellets from Traeger or Pit Boss provide the most reliable smoke profile. Avoid pre-seasoned loin; the custom rub deserves to shine.

No hickory pellets? Apple or cherry wood work well but add a subtle sweetness that shifts the flavor profile. Garlic salt can replace garlic powder at half the volume (reduce added salt accordingly). Mustard allergy? Olive oil as a binder works, though the rub adheres slightly less effectively. The vinegar spritz can be omitted, but it helps maintain moisture during the long cook.

Store pork loin wrapped tightly in plastic for up to 3 days in the fridge, or freeze for 6 months. Rub components keep indefinitely in a cool, dark pantry. Once cooked, rest the pork 15 minutes before slicing—this maintains the promised tenderness from the introduction.

Step-by-Step Instructions for Pork Loin on Pellet Grill

Master the technique that transforms this lean cut into succulent, smoke-kissed perfection every time.

Step 1: Prepare and Season the Pork Loin

Pat the 2.5 lb pork loin completely dry with paper towels to ensure the rub adheres properly. I always trim any remaining silver skin or excess fat for uniform cooking and better bark formation.

Combine the 1.5 tbsp kosher salt, 1 tbsp coarse black pepper, 1 tbsp garlic powder, 1 tbsp onion powder, 1 tsp smoked paprika, and 1 tsp dried thyme in a small bowl. Rub the 0.25 cup yellow mustard evenly over the pork loin’s surface, then apply the spice mixture generously, pressing it into the meat to create a flavorful crust. Let it rest at room temperature for 30 minutes while you prepare the grill.

Step 2: Set Up and Preheat the Pellet Grill

Fill your pellet grill’s hopper with the 2 cups hickory wood pellets. These will provide the consistent smoke flavor essential for this dish. Set the grill to 225°F and allow it to preheat for at least 15 minutes with the lid closed.

Once preheated, the grill should produce a steady stream of thin blue smoke. This temperature creates the ideal environment for low-and-slow cooking that keeps the pork loin moist while infusing it with smoky depth. Place a water pan in the grill if your model accommodates one to help maintain moisture during the long cook.

Step 3: Smoke the Pork Loin to Ideal Internal Temperature

Place the seasoned pork loin directly on the grill grates, fat side up. Insert a meat probe into the thickest part of the loin, avoiding fat pockets. Smoke undisturbed for 2-2.5 hours or until the internal temperature reaches 145°F.

Every 45-60 minutes, spritz the loin lightly with the 0.25 cup apple cider vinegar to keep the surface moist and enhance bark development. Maintain a consistent 225°F throughout the cooking process. The pork loin is done when it reaches temperature and the surface develops a dark, mahogany bark.

Step 4: Sear and Finish for Maximum Flavor

For the final touch, increase the grill temperature to 400°F. Brush the pork loin with the 2 tbsp olive oil and sear for 3-5 minutes per side to develop a crispy exterior. During the last minute, add the 2 tbsp unsalted butter to the grill grates near the loin, allowing it to melt and baste the meat for added richness.

Remove the pork loin when it reaches an internal temperature of 145-150°F. The searing step adds textural contrast and deepens the flavor profile, creating a beautiful crust that complements the tender interior.

Step 5: Rest and Slice for Optimal Tenderness

Transfer the pork loin to a cutting board and tent loosely with foil. Let it rest for 10-15 minutes to allow the juices to redistribute throughout the meat. This resting period is crucial for maintaining moisture and ensuring each slice is tender and flavorful.

Slice against the grain into ½-inch thick medallions. The pork loin should display a beautiful smoke ring just beneath the bark, with juices that pool slightly when cut. Serve immediately while warm to enjoy the full spectrum of smoky, savory flavors.

Troubleshooting This Recipe

Temperature Fluctuations

If your pellet grill can’t maintain 225°F, first check for pellet jams in the auger. I’ve found Traeger grills sometimes need a quick vacuum of the firepot. Cold weather can also cause drops—try insulating with a grill blanket. 🌡️

Uneven Cooking

Hot spots often occur with larger cuts. Rotate your 2.5 lb pork loin every 45 minutes for even exposure. If one side browns faster, shield it with foil temporarily. Always use a dual-probe thermometer to monitor both grill and meat temps.

Bark Not Forming

For better crust, ensure your pork loin surface is completely dry before applying the rub. The yellow mustard binder helps, but too much can steam the meat. Spritz with apple cider vinegar every hour to build layers of flavor and texture.

Dry Meat Issues

Pork loin can dry out quickly. Pull it at exactly 145°F internal—it’ll carryover to 150°F while resting. If it’s already overdone, serve with a warm pan sauce made from unsalted butter and cooking juices. 💡

Smoke Flavor Too Strong

Hickory can overpower if overused. Stick to 2 cups pellets max for this cook. For milder smoke, switch to apple or cherry wood pellets. Remember, the first hour absorbs the most smoke, so start strong then maintain.

Stall Problems

If temperature plateaus at 160°F, don’t panic. The stall is normal as moisture evaporates. Power through by maintaining 225°F—avoid cranking the heat. Wrapping in foil can help, but I prefer letting it ride for that perfect bark.