If you love Salisbury steak, you won't be able to resist this casserole. Built much like a shepherd's pie, the recipe below combines the flavors of steak, mushrooms, onions, and gravy in a layered casserole. Topped with creamy mashed potatoes and baked, it's a delicious play on the classic.
As with classic Salisbury steak, the secret of success in this recipe is undoubtedly the sauce. To make it, this recipe calls for condensed beef broth and condensed cream of mushroom soup, both of which effortlessly add richness and depth of flavor mirrored by the sautéed mushrooms and onions that are cooked with the beef itself.