Depending on thickness and desired degree of doneness, this is a really simple method: Salt, pepper
and olive oil the room temperature steak. Place in a hot, cast iron fry pan, sear both sides until crusty (4-5 minutes a side.) Slide the steak, in its pan, into a pre-heated 350°F oven for 15-25 minutes until the inner temperature reaches 129°F (for medium rare.) Remove pan from oven, put the steak on a plate and let it rest for 10 minutes. For that "professional steak house" touch, rub it with a pat of really good butter before serving.