If you’re looking for a recipe to tenderize tough London broil, this stovetop method delivers. Despite its name, London broil refers less to a specific cut than to a technique. It starts with a lean steak (often top round or flank), which is marinated, cooked quickly over high heat, and sliced thinly against the grain to maximize tenderness.

This easy London broil recipe relies on a savory marinade with a small amount of baking soda to help tenderize the meat and encourage browning. Though traditional London broil is often…well, broiled…or grilled, we prefer this stovetop cast-iron searing method for juicy, reliable results. Keep your meat thermometer handy; this lean cut becomes tough when cooked beyond medium-rare.…