In a large bowl or container, combine the soy sauce, olive oil, lemon juice, and Worcestershire sauce—these four ingredients form the liquid foundation that will tenderize and flavor the steak. Add the brown sugar and balsamic vinegar, stirring until the sugar dissolves completely. This sweetness will help create a beautiful caramelized crust when grilled. The vinegar adds complexity and helps balance the salty umami flavors.

Add the minced garlic cloves, garlic powder, basil, parsley, and pepper to the liquid mixture, stirring well to distribute all the seasonings evenly. I like to use freshly minced garlic here because it releases more pungent, vibrant flavors than garlic powder alone—the two together create layers of garlic depth. Make sure no clumps of spices remain and the marinade is fully blended before adding the steak.

Add the 3 lb steak pieces (cut into 1-inch thick pieces) to the marinade, making sure they are fully submerged by stirring and rotating them so all surfaces contact the liquid. Cover the container and refrigerate for at least 1 hour, though overnight marinating will yield deeper, more complex flavors. The longer marinating time allows the enzymes in the marinade to begin breaking down the muscle fibers, resulting in more tender meat.

Remove the marinated steak from the refrigerator and let it sit at room temperature for 20-25 minutes before grilling. This allows the meat to warm up and cook more evenly throughout, preventing a cold center when you achieve a nicely seared exterior. Pat the steak pieces dry with paper towels, reserving any excess marinade for basting if desired.

Heat your grill to high heat and place the steak pieces directly on the hot grates. Sear for 3-5 minutes without moving them—this creates the flavorful crust through the Maillard reaction, where proteins and sugars caramelize together. I find that letting the steak sit undisturbed gives you much better browning than constantly moving it around.

Flip each steak piece and cook for 3 minutes on the second side. Then reduce the grill heat to medium-low and continue cooking until the internal temperature reaches 130-135°F for medium-rare doneness (measured with an instant-read thermometer in the thickest part of the steak). This two-temperature approach ensures a well-developed crust while preventing overcooking the interior.

Transfer the cooked steak to a clean plate and let it rest for 5-10 minutes before serving. This allows the juices to redistribute throughout the meat rather than running out when you cut into it, keeping each bite juicy and tender.