Pat the steak dry with paper towels
Season both sides generously with salt and pepper
Let the steak sit at room temperature for 20 to 30 minutes
Heat a cast iron skillet over high heat until very hot
Add a small amount of high-smoke-point oil
Place the steak in the skillet
Do not move it for 2 to 4 minutes
Flip the steak
Cook the other side for 2 to 4 minutes
Sear the edges with tongs if needed
Add butter, garlic, and herbs during the last minute if desired
Spoon the melted butter over the steak
Check doneness with a meat thermometer
Remove the steak from the skillet
Rest the steak for 5 to 10 minutes
Slice against the grain and serve