In a bowl, whisk together soy sauce, olive oil, Worcestershire sauce, honey, minced garlic, and black pepper. Place the flank steak in a resealable bag or shallow dish and pour the marinade over it. Ensure the steak is fully coated. Marinate in the refrigerator for at least 30 minutes, or up to 4 hours.
Preheat your grill or a cast-iron skillet over medium-high heat.
Remove the steak from the marinade, letting any excess drip off. Discard the remaining marinade.
Grill or sear the flank steak for 4-6 minutes per side for medium-rare, or adjust to your desired level of doneness. An internal temperature of 130-135°F (54-57°C) is recommended for medium-rare.
Remove the steak from the heat and let it rest for 5-10 minutes before slicing against the grain.
Notes
Serve sliced flank steak with your favorite sides like roasted vegetables, rice, or a fresh salad.