First Step: Mix the Marinade In a medium bowl or large resealable plastic bag, whisk together ½ cup soy sauce (or coconut aminos), ¼ to ⅓ cup olive oil, 2 tablespoons vinegar, 2 tablespoons Worcestershire sauce, 1 to 2 tablespoons honey or brown sugar, mustard, minced garlic, lemon or lime juice, and all the chosen herbs and spices. Stir well so all ingredients blend perfectly. Reserve 2 tablespoons of marinade if you want to drizzle it over the cooked steak later.

Second Step: Marinate the Flank Steak Place 1.5 pounds flank steak into the bowl or seal it inside the plastic bag. Make sure the steak is fully coated and submerged in the marinade. Massage gently for even coverage. Seal the container tightly and refrigerate for at least 1 hour, up to 12-24 hours for maximum flavor and tenderness. Avoid exceeding 24 hours to prevent the meat from becoming mushy.

Third Step: Prepare for Cooking Remove the marinated steak from the refrigerator 30 to 60 minutes before grilling to bring it to room temperature. This step ensures even cooking and better sear development. Meanwhile, preheat your grill or skillet to medium-high heat (about 450°F). Clean and lightly oil the grates to prevent sticking.

Fourth Step: Cook the Steak Take the steak out of the marinade, letting excess drip off, and discard the leftover marinade unless reserved for basting. Grill the steak for about 3 to 6 minutes per side, depending on thickness and desired doneness: 3-4 minutes for rare to medium-rare, 5-6 minutes for medium. Flip only once with tongs for optimal crust and juice retention. Use an instant-read thermometer to check doneness (Rare 125°F, Medium Rare 130-135°F, Medium 140-145°F).

Fifth Step: Rest the Steak Once cooked to preference, remove the steak from heat and let it rest loosely tented with foil for 10 minutes. Resting allows juices to redistribute, ensuring tenderness and juicy bites.

Final Step: Slice and Serve Slice the marinated flank steak thinly against the grain to maximize tenderness. Optionally drizzle reserved marinade or serve with fresh herb sauces. Pair with sides such as grilled vegetables, salads, or rice for a wholesome meal. Enjoy your flavor-packed marinated flank steak!