While thin steaks are ideal for portion control, getting a high-quality sear on them without overcooking the interior can be difficult. Searing is very important -- steaks with little to no sear have poor flavor and an unpleasant texture. Unfortunately, thin-cut steak -- regardless of how you prepare it -- will never reach the same level of sear as thick-cut steaks without overcooking. However, you can amp up the browning and crusting on the exterior of the steak while you cook it on the grill -- away from fatty cooking oils.
Making the Steaks
Remove the steaks from the packaging and pat them dry with paper towels; rub their exterior with salt. Place the steaks on a wire rack placed over a baking sheet, loosely cover them with butcher or wax paper, and place in the refrigerator for at least one hour.
Remove the steaks from the refrigerator and pat them dry with paper towels. Coat the exterior of the steaks with cornstarch, place them back on the wire rack and place them inside your freezer. Freeze the steaks for approximately 20 to 40 minutes until firm and dry, but not fully frozen.
Prepare your grill for high-heat, direct grilling; you want your grill as hot as possible for these steaks. If you are using a gas grill, turn all your burners to the high setting and preheat for at least 15 minutes before cooking. With a charcoal grill, remove the top grilling grate and light the coals using a charcoal or chimney starter. When the coals are blazing orange and red, spread them through the bottom of the grill using grill tongs or spatula. Replace the top grilling grate and allow the coals to continue to burn and ash over for about 5 to 10 minutes longer; the coals are ready when coated with a light grey ash.
Clean the grilling grate using a wire grill brush to remove any grill grit.
Rub the steaks with pepper -- preferably fresh cracked pepper.
Place the steaks on a preheated grill at a 45-degree angle to the grill grate and cook for 1 to 1 1/2 minutes; then rotate the steaks 90 degrees and grill for an additional 1 to 1 1/2 minutes. Once the steaks are browned on one side, flip over and cook for 1 to 1 1/2 minutes more. Finally, rotate the steaks 90 degrees again and cook until the steaks are fully browned on both sides. Total grilling time should be between 4 and 6 minutes, depending on the thickness of the steaks.
Remove the steaks from the grill onto a heated serving platter; tent with aluminum foil and allow the steaks to rest for 5 minutes before serving.