Remove the filet mignon from the refrigerator 30 to 45 minutes before cooking
Pat the steak dry with paper towels
Preheat the oven to 425°F
Season both sides with salt and black pepper
Heat an oven-safe skillet over high heat
Add a small amount of oil to the skillet
Sear the steak for 2 minutes per side
Add butter, garlic, and herbs if desired
Transfer the skillet to the oven
Roast until the internal temperature reaches 125°F for rare, 130°F for medium-rare, or 140°F for medium
Remove the steak from the oven
Let it rest for 5 to 10 minutes
Slice and serve