In a heavy-bottomed skillet heat 2 tablespoons of the sesame oil and slowly caramelize the onion slices until brown and creamy.
In a bowl combine the ground beef, caramelized onions (reserving ¾ of the onions for garnishing the finished burgers), cream, balsamic vinegar, and ketchup. Season with salt and a couple twists of pepper and mix well. Divide the mixture into two balls and then form into patties about 3/4–inch thick.
In a heavy-bottomed skillet heat the remaining 2 tablespoons of sesame oil over medium-high heat and brown the burgers for 1–2 minutes on each side. Rare is good.
To serve: Place one large butter lettuce leaf in the center of each dinner plate. Place the burger on the lettuce leaf and top with the blue cheese, more caramelized onion, and your chosen garnishes. Place the remaining butter lettuce leaf on top of the burger.
Tagged
