Take the steak out of the refrigerator and let it come to room temperature for about 45 minutes. This helps ensure even cooking.
Pat the steak dry with paper towels to remove any excess moisture, which helps with searing.
Season the steak generously with salt and pepper on both sides. You can add other seasonings if you like, but keep it simple to let the flavor of the meat shine through.
Heat a heavy-bottomed skillet or grill pan over high heat. You want it to be very hot.
Add a small amount of oil to the pan and swirl to coat the bottom.
Carefully place the steak in the hot pan. Let it cook undisturbed for about 1-2 minutes on each side, depending on the thickness of the steak and your desired level of doneness. For a blue steak, you want the outside to be well-seared while the inside remains cool and raw.
Use tongs to flip the steak and sear the other side for another 1-2 minutes.
Once both sides are seared, remove the steak from the pan and let it rest for a few minutes before slicing.
Slice the steak thinly against the grain and serve immediately.