Sort of a modified version of Alton Brown’s approach. This is gonna create a decent amount of smoke — I’d recommend opening a few windows and maybe disabling some fire alarms. If the oil catches on fire, remove oxygen from the oil. Do not pour water onto an oil fire.
Preheat the oven to 500°F and place the cast iron skillet inside.
While preheating, bring the steak to room temperature.
Coat the steak generously with salt on every side.
Coat the steak lightly in safflower oil.
Carefully remove the skillet from the oven.
Place the steak on the skillet for one minute without moving.
Flip the steak and return it to the oven for 5 minutes.
Remove, flip again, and bake for another 4 minutes.
Rest for 2–4 minutes. I like to place butter and garlic on top and wrap in foil.
This will cook to about medium–medium rare. Add a minute or so to the oven time if you’d like it more well done.