See how to make big burgers stuffed with a savory bacon surprise. Lean ground beef combines with onion soup mix to form patties stuffed with chopped bacon and sautéed onions. See how it’s done! Watch the video, then get LAURASC’s 5-star recipe for Mom's Legendary Stuffed Hamburgers. Try these thick, juicy bacon-stuffed burgers served open-face on a bun topped with sautéed mushrooms and a slice of Swiss cheese.