In a large mixing bowl, add all ingredients. Mix together using your hands until ingredients are barely combined (be sure to not overmix because then the hamburgers will become dense).
Form the mixture into 8 patties. Be sure to make them a little larger than the patties that you plan to use because ground beef shrinks when it cooks.
Preheat the grill to medium-high heat.
Lightly oil the grill grate and place patties on top of grill.
Grill patties until no longer pink on the inside or until they reach desired doneness (I usually grill mine for about 5 minutes on each side).
Place cooked burger on a hamburger bun and top with favorite toppings.
Notes
Here are ingredients we like to top off our classic burgers: