The day before you plan to cook the tenderloin, remove it from its packaging and pat it dry. Trim any fat or silver skin that may have been left on.
Season the beef tenderloin with salt or your favorite beef rub that has salt in it. Truss or tie off the tenderloin with cooking twice.
Place the prepared tenderloin on a sheet pan lined with a wire rack and place the refrigerator uncovered over night.
Cooking the Tenderloin
When you are ready to cook, remove the tenderloin from the refrigerator 30 min in advance.
Preheat your Traeger to 425F.
Drizzle the tenderloin with avocado oil or your favorite neutral flavored cooking oil. Season with additional spices as desired- black pepper, granulated garlic, paprika, and onion powder.
Place the tenderloin directly on the grill grates and cook with the lid closed for 25 minutes or until it has reached an internal temperature of 127F for a medium pink all of the way through. Flip the tenderloin 2-3 times throughout the cooking process to ensure even cooking.
Remove the tenderloin and wrap with foil as soon as it reaches the ideal desired temperature. Let it rest for 15 minutes before slicing.
Slice and serve with your favorite side dishes and sauces.