Preheat the oven to 425°F
Pat the tenderloin dry with paper towels
Trim any excess fat or silver skin
Season all sides with salt and pepper
Heat a skillet over medium-high heat
Add oil to the skillet
Sear the tenderloin on all sides until browned
Transfer the skillet to the oven, or move the tenderloin to a roasting pan
Roast until the internal temperature reaches your desired doneness
Remove from the oven and rest for 10 to 15 minutes
Slice against the grain
Serve immediately