A wise person once said, "Make friends with your butcher and it will be a relationship that will never fail you." We live and eat by that every single day and it makes all the difference. Your friendly butcher will trim your meat, in this case the tenderloin, removing the ends that taper which will help it to cook more evenly and in turn you won't be paying for the overcooked ends.
Sometimes we like to marinate but in this case, the tenderloin is already so incredibly tender (hence the name) and flavorful that all it really needs is a good rub, some smoke and of course a searing high heat to seal in all of that goodness. If you want to simplify you can omit the exterior mustard slather but it will definitely help lock in the moisture.
With a few minor tweaks, we took this recipe from our Traeger's Everyday Cookbook.
WHOLE GRILLED BEEF TENDERLOIN
PREP TIME: 5 minutes
COOK TIME: 1 hour 30 minutes
RECOMMENDED PELLETS: Oak, Pecan or Hickory
SERVES: 4 to 6
2 tablespoons extra virgin olive oil (divided use)
1 2- to 3-pound filet of beef, trimmed, preferably center cut (see Note below)
Traeger Beef Rub or Prime Rib Rub, or coarse salt and freshly ground black pepper
1/3 cup Dijon-style mustard
1 teaspoon dried thyme leaves or 1 tablespoon fresh thyme leaves
1 teaspoon Worcestershire sauce
Start the Traeger on Smoke with the lid open for 4 to 5 minutes or until the fire is established.
If you don't want to trim off the thinner ends of the tenderloin simply tuck the narrow "tail" ends under the tenderloin and secure them in place with butcher's string to help it cook more evenly.
Place the tenderloin on the grill and smoke for 1 hour.
After you take the meat off the Traeger, turn the heat up to 400 degrees F and preheat, lid closed, for 10 to 15 minutes.
Heat a large skillet, preferably cast iron, on the stovetop over medium-high heat. Add one tablespoon of the olive oil to the pan. Season the meat with the Traeger Beef Rub. (You may need to drizzle the tenderloin with olive oil to help the seasoning adhere.) When the oil is shimmering, put the meat into the pan, searing it well on all sides. (Don’t forget the ends: Carefully hold the meat upright with tongs.)
Transfer the meat to a rimmed baking sheet. In a small bowl, combine the mustard, thyme, Worcestershire sauce, and the remaining tablespoon of olive oil and mix well.
Brush or slather the mustard mixture over the outside of the filet.
Put the filet directly on the grill grate and roast for 25 to 30 minutes, or until an instant-read meat thermometer registers an internal temperature of 135 degrees F (for medium rare). Cook less time if you prefer your meat rarer than that, or more time if you like it well-done.
Transfer to a cutting board and let the meat rest, tented with aluminum foil, for 5 minutes before slicing and serving.
Whole Grilled Beef Tenderloin Recipe.docx (12.62 kb)