Preheat your oven with the broiler turned on on it's highest setting. meanwhile heat a cast iron pan on high on the stovetop. season the steak with salt and pepper lightly. sear 2 minutes per side then place the pan in the oven and cook for another 6 minutes for medium rare, 8 for medium 10 for medium well, etc. that is pretty much the way a steakhouse does it but they have much more expensive broilers.