In a bowl, mix ground beef with all ingredients. Use your hands to ensure the meat is mixed well. Divide into 8 even-sized patties.
If you have a charcoal, gas, or wood pellet grill, set it for direct heat. Or build a fire in the campfire pit and let it burn down to the coals. Target a grill temperature of 450°F.
Place burger patties directly on the grill grate and cook for 4 minutes on each side, or to desired doneness.
Top each patty with a slice of cheddar cheese and cook until the cheese melts.
Place the burgers on the buns and add your favorite topping.