1. Preheat oven to 325 degrees.
2. Season your tenderloin with black pepper & sliced onions, then place lean bacon over the top of the entire roast.
3. Place in oven uncovered and roast 20 minutes per pound.
Example: 3 lb. Roast (3 x 20 minutes = 60 minutes or 1 Hour)
4. Take tenderloin out when internal temperature reaches 120 degrees.
5. Let stand 10 minutes before slicing. (Serve bacon on the side as a garnish)