Choose a well-marbled steak, 1 to 1.5 inches thick
Pat the steak completely dry
Season generously with salt and black pepper
Let the steak sit at room temperature for 20 to 30 minutes
Preheat a heavy skillet or grill until very hot
Add a small amount of high-smoke-point oil if using a skillet
Place the steak on the hot surface
Do not move the steak while it sears
Sear the first side for 2 to 4 minutes
Flip the steak once
Sear the second side for 2 to 4 minutes
Sear the edges briefly if needed
Add butter, garlic, and herbs near the end if desired
Baste the steak with melted butter for extra flavor
Check doneness with a meat thermometer
Remove at 125°F for rare
Remove at 130°F for medium-rare
Remove at 140°F for medium
Remove at 150°F for medium-well
Rest the steak on a plate or cutting board for 5 to 10 minutes
Slice against the grain
Serve immediately