Place the garlic, red wine, balsamic vinegar, soy sauce and honey in a blender and puree for 30 seconds.
In a gallon ziplock bag, pour the marinade in bag and place the London broil in the bag. Seal the bag and make sure to remove all the excess air. Marinate steak in the refrigerator for at least 4 hours (turning occasionally).
Preheat your grill on high heat. Oil the racks with grilling cooking spray. Reduce the heat to medium heat (about 400 degrees Fahrenheit and grill stead for 7 to 9 minutes on each side for medium-rare. Transfer steak to a cutting board and let stand 10 minutes. Cut thin slices of steak against the grain by holding a very sharp knife at a 45-degree angle. Enjoy immediately.
Calories: 230kcal | Carbohydrates: 6g | Protein: 36g | Fat: 5g | Saturated Fat: 2g | Cholesterol: 92mg | Sodium: 435mg | Potassium: 597mg | Fiber: 1g | Sugar: 5g | Vitamin C: 1mg | Calcium: 40mg | Iron: 3mg