Combine ground beef, breadcrumbs, egg, minced onion, Worcestershire sauce, garlic powder, salt, and black pepper in a large mixing bowl. Mix gently with your hands until just combined, being careful not to overwork the meat because that makes your tailgate burgers dense and tough.
Divide the mixture into 8 equal portions and form into patties approximately three-quarters inch thick. Make a slight indent in the center of each patty with your thumb to prevent them from puffing up during cooking.
Preheat your grill to medium-high heat, approximately 400°F. Lightly oil the grill grates to prevent sticking and ensure those beautiful caramelized marks on your juicy tailgate grilled burgers recipe.
Place patties on the grill and cook for 3-4 minutes without moving them, allowing a crust to form. This crucial step traps juices inside your football grilling masterpiece.
Flip burgers carefully and cook the second side for 3-4 minutes until internal temperature reaches 160°F. During the last minute, top each patty with cheddar cheese and close the grill lid briefly.
Remove from heat and let rest for 2 minutes on a plate. This allows the juices to redistribute throughout the patty.
Butter your buns lightly and toast them on the grill for 1 minute until golden and fragrant. This simple step transforms your game day BBQ experience dramatically.
Assemble your tailgate burgers by adding tomato slices, onion slices, and lettuce to each bun. Spread ketchup and mustard according to preference.