Combine lean ground beef, black pepper, minced garlic, chopped onion, cayenne pepper, Heinz 57 steak sauce, Worcestershire sauce, Dijon mustard, and egg in a bowl.

Mix all ingredients well until thoroughly combined.

Shape the mixture into 5 equal-sized patties.

Place the patties on a waxed paper-lined cookie sheet.

Cover the cookie sheet with foil or plastic wrap.

Refrigerate the patties until well-chilled (about 15 minutes) to prevent them from falling apart during cooking.

Preheat your grill to medium-high heat.

Grill the patties for 4 to 6 minutes on each side, or until cooked through.

Alternatively, cook on a George Foreman Grill for 3-5 minutes.

Serve the burgers on your favorite buns with desired toppings.