Combine ground sirloin, seasoned salt, and ground pepper. Mix well. Slice onion thinly and place into a skillet with peanut oil. Grill onions slowly, do not brown onions. When the onions are almost translucent make 6 to 8 hamburger patties, make them thick (approximately 1/2 inch), and place into hot pan. Grill hamburgers for 4 to 5 minutes before turning them. Flip hamburgers, and remove onions. When hamburger patties are done assemble them with.
Bottom bun, pickle, meat patty, cheese, grilled onions, and then ketchup.Makes 6 Source: