Heat the grill or pan. Heat the grill or pan to a high temperature. This will help to create a flavorful crust on the steak. Cook the steak. Place the steak on the hot grill or pan and cook for 3-4 minutes per side, or until the steak reaches an internal temperature of 145°F. Once the steak is cooked, let it rest for 5-10 minutes before slicing. This will help to ensure that the steak is juicy and tender. In this article, we will explore the many ways to cook and enjoy flank steak.