1. Prepare the Steak:
Remove the flank steak from the refrigerator and let it sit at room temperature for about 30-45 minutes before cooking. This ensures even cooking.
2. Preheat Your Cooking Surface:
Preheat a grill, cast-iron skillet, or stovetop grill pan over medium-high heat.
3. Sear the Steak:
If grilling, place the steak directly on the grates. Cook for about 4-5 minutes on one side, allowing it to develop a nice sear.
If using a skillet, add a tablespoon of high smoke-point oil (like canola or grapeseed) and heat until shimmering. Add the steak and sear for about 4-5 minutes.
4. Flip and Continue Cooking:
Flip the steak and cook for an additional 3-5 minutes. For medium-rare, aim for an internal temperature of around 130°F (54°C).
5. Rest the Steak:
Once cooked to your desired doneness, remove the flank steak from the heat and let it rest for 5-10 minutes on a cutting board. This resting period allows the juices to redistribute for maximum tenderness.
6. Slice Against the Grain:
Flank steak is best served sliced against the grain. This helps break up the muscle fibers, resulting in a more tender bite. Cut into thin strips and serve.