Preheat an outdoor grill for high heat, and lightly oil grate.
In a large bowl, mix ground beef, egg, quick cooking oats, dried onion flakes, seasoning salt, pepper, ketchup, and dry onion soup mix. Form the mixture into about 4 burger patties.
Place burger patties on the prepared grill, and cook about 5 minutes on each side, to an internal temperature of 160 degrees F (63 degrees C).
