The Oklahoma Onion Burger might just be the most delicious hamburger I've ever had. I took four 3-ounce balls of ground chuck, seasoned them on the flattop pictured below, and smothered them with piles of onion slices Chef Elaine made using the mandolin. Using a large spatula, I smashed the balls and onions into a patty, cooked them for four minutes, flipped them, added American cheese, and laid the hamburger buns on top crust sides up. Four more minutes and the perfect burger was done. Instructions, and a bit of a history lesson, can be found at the YouTube link below.
Big shout to my daughter for this delicious tip!