In a sealed plastic bag or plastic container place your flank steak, olive oil, onion, Italian seasoning, black pepper, soy sauce, balsamic vinegar, garlic. Sealed and rub the steak to make sure the marinade is all over the steak.
Marinate steak for 2 hours or up to 24 hours. The longer you let your steak marinade, the more tender it will be. We like to marinate our steak the day before in the evening and by the next evening it is ready to go.
Preheat you grill to medium high heat. Prep and clean your grill. Remove your flank steaks from the marinade but leave on the attached onions and garlic as these are flavorful when they cook. Salt and Pepper Flank Steaks well on both sides or use a grill spice like McCormick's Montreal Steak Seasoning before placing the steak on the grill.
Grill flank steaks about 4-5 minutes on each side for medium rare steak.
Rare: 125 to 130 degrees F (51 - 54 degrees C)Medium rare: 130 to 140 degrees F (54 – 60 degrees C)- our favorite way to grill flank steaks! (perfectly juicy and tender)Medium: 140 to 150 degrees F (60 - 65 degrees C)Medium well - not recommendedWell done - not recommended
You may also use the finger method to determine when you flank steak is cooked. Refer to the infographic above in the post for details.
Remove your steak from the grill and let it rest, tented with aluminum foil for about 10 minutes.
Slice Flank Steak across the grain and thin. Serve with Easy Herb Butter or our Healthy Alternative Sip Sauce, if desired. Enjoy!