Pat the filet mignon dry
Season generously with salt and black pepper
Let it sit at room temperature for 20 to 30 minutes
Preheat a skillet over medium-high heat
Add a small amount of oil with a high smoke point
Sear the steak for 2 to 3 minutes per side
Sear the edges briefly if needed
Add butter, garlic, and herbs if desired
Spoon the melted butter over the steak while cooking
Cook until the internal temperature reaches your preferred doneness
Remove the steak from the pan
Rest it for 5 to 10 minutes
Slice and serve