Burgers with Red Onion Jam
In a large bowl, mix together sirloin and chuck. Gently form into 4 equal patties. Season patties with salt and pepper.Advertisement
Preheat a grill pan or large skillet over medium-high heat. Oil a grill pan or skillet. Heat for 1 minute; add patties. Cook, turning once, about 4 minutes per side for medium-rare. Cook 1 or 2 minutes longer per side for a more well-done burger. Top burgers with cheese if desired, and cook until melted.
Place each burger on a bun, and serve with tomatoes and red onion jam, if desired.