Preheat your smoker to 225f and prepare a tinfoil boat and place it on a wire mesh cooling rack.
Meanwhile, add the 1 cup fine bread crumbs or panko to a large bowl. Grate 1 large yellow onion over the bowl, and toss to coat.
Add in the 2 lbs lean ground beef, 2 large eggs, 4 cloves garlic, 1 teaspoon coarse black pepper, 1 teaspoon coarse kosher salt, and 3 tablespoons BBQ dry rub and avoid over-mixing.
Form the meat mixture into a large loaf. Place the loaf on the prepared boat. Set aside for now.
In a small bowl, whisk together the ½ cup ketchup, 2 tablespoons white vinegar, and 1 tablespoon dark brown sugar.
Use a brush to baste a layer of sauce on the top and sides of the meatloaf.
When ready to smoke, place the wire mesh rack right on the middle grill grate.
Smoke the meatloaf at 225f for 2 hours, baste again, and continue to smoke for another 2 hours, or until the internal temperature reaches 165f.
Allow the meatloaf to rest for 10 minutes at room temperature before serving.
Notes
Make ahead:
To make ahead, simply prepare the meatloaf and stop before smoking. Once the meatloaf is formed, wrap it tightly in plastic wrap and freeze on a baking sheet until frozen, or very firm, 2-3 hours. Then either wrap in tin foil and place in an airtight freezer bag or vacuum seal.Keep the frozen, uncooked meatloaf in the freezer for up to 3 months before cooking.To cook, remove from the freezer and thaw overnight in the fridge before smoking meatloaf as per the recipe.
I find one batch of this smoked meatloaf is enough to serve 8 people! This recipe can easily be doubled or halved based on your desired quantities. If halving the recipe, the cook time will likely be shorter as the loaf is smaller.
Storage:
Leftover Traeger smoked meatloaf can be stored in the fridge in an airtight container for up to 3 days.It can be reheated in a small, covered baking dish with 1-2 tablespoons of beef broth. Bake at 300f for 15-20 minutes or until heated through.
variations + substitutions
Smash the easy button and swap out the glaze for your favorite barbecue sauce!