Grill thicker part of steak for about 5 minutes per side and thinner part for 3 minutes per side, or until a meat thermometer registers 125°to 130°F (52° to 54°C) for medium-rare. You can also sear the steak in a lightly oiled, hot, heavy pan for 1 to 2 minutes per side. Finish cooking in a 425°F (220°C) oven for 7 to 10 minutes, or until medium-rare.