Marinated Flat Iron Steak

3 steps · 45 min total

1. 01

   Cut the Steak

   Cut the flat iron steak lengthwise to form two equal strips.
2. 02

   Combine the Marinade

   In a large baking pan or Ziploc bag, combine the balsamic vinegar, Dijon mustard, minced garlic, ginger, rosemary, lemon zest, lemon juice, olive oil, and mayonnaise. Season generously with salt and pepper.
3. 03

   Marinate and Grill

   Add the two strips of flat iron steak to the marinade in the pan or bag, ensuring they're fully coated. Place it in the refrigerator for at least 1 hour, or even longer if you have the time.

   When you're ready to cook, start your grill and preheat it to high heat.

   Once the grill is hot, add the marinated steaks. Cover the grill and cook for 3 minutes. Flip the steaks and cook the other side for another 3 minutes, or until they reach your desired doneness.