This classic Salisbury steak recipe features tender lean ground beef patties seasoned with aromatic spices and cooked in a rich mushroom gravy. The patties are browned on the stovetop and then simmered in a flavorful, thickened sauce made with baby bella mushrooms, Dijon mustard, and beef broth. Perfectly suited for serving over mashed potatoes, noodles, or rice, this comforting dish delivers hearty flavor in just about 35 minutes.