01 -
In a medium bowl, whisk together soy sauce, olive oil, red wine vinegar, Worcestershire sauce, Dijon mustard, and brown sugar until thoroughly blended.
02 -
Add minced garlic, black pepper, onion powder, dried oregano, and crushed red pepper flakes. Mix until evenly combined.
03 -
Place steak in a large resealable plastic bag or shallow dish. Pour marinade over steak, ensuring all surfaces are coated.
04 -
Seal the bag or cover the dish, then refrigerate for a minimum of 2 hours and up to 24 hours to enhance flavor penetration.
05 -
Preheat grill to medium-high heat. Remove steak from the marinade and discard any remaining liquid.
06 -
Place steak on grill and cook for 4-6 minutes per side for medium-rare, adjusting timing based on thickness and desired doneness.
07 -
Let steak rest uncovered for 5-10 minutes to retain juices, then slice and serve immediately.