Ingredients
2 pounds ground beef (80–85% lean)
1 (6.7-ounce) box dry beef-flavored stuffing mix
2 (10.5-ounce) cans condensed cream of mushroom soup
1 (1-ounce) packet brown gravy mix
Directions
In a large mixing bowl, combine the ground beef and dry beef-flavored stuffing mix. Use clean hands to gently mix until the stuffing is evenly distributed but the meat is not overworked. The stuffing mix replaces breadcrumbs, seasoning, and binder all in one, which keeps us at just four ingredients.
Divide the meat mixture into 8–10 equal portions, depending on how large you like your patties. Shape each portion into an oval patty about 3/4 inch thick, pressing firmly so they hold together but not compacting them into hard disks.
Lightly spray the inside of your slow cooker with nonstick cooking spray (optional, but it helps with cleanup). Arrange the patties in a single layer as much as possible; a bit of overlapping is fine, but avoid stacking them directly on top of each other. If your slow cooker is small, you can stand a few patties on edge along the sides.
In a medium bowl, whisk together the condensed cream of mushroom soup and the brown gravy mix. Add 1/2 cup of water if you prefer a slightly looser gravy, whisking until smooth and no dry gravy mix remains. This simple combination will cook down into a glossy, savory mushroom sauce that feels very much like classic cafeteria gravy.
Pour the soup and gravy mixture evenly over the patties in the slow cooker, making sure each patty is at least partially covered. Use a spoon to nudge the sauce between the patties so it can circulate as it cooks.
Cover the slow cooker and cook on LOW for 5–6 hours, or on HIGH for 2 1/2–3 hours, until the patties are cooked through (an internal temperature of 160°F) and very tender. The gravy will thicken and become rich and glossy, with the edges bubbling when you lift the lid.
Once cooked, carefully lift the patties out with a wide spatula, as they will be very tender. Arrange them in a shallow serving dish, or in two foil trays if you want that nostalgic cafeteria-style look. Spoon the hot mushroom gravy generously over the top. You should see steam rising and a smooth, shiny sauce coating the oval patties.
Taste the gravy and add a pinch of salt or black pepper at the table if needed, keeping in mind that the stuffing mix and gravy packet already provide plenty of seasoning. Serve the Salisbury steaks hot with your favorite comforting sides, making sure everyone gets plenty of sauce.
Variations & Tips
For a slightly lighter version, use 90% lean ground beef and add a splash (2–4 tablespoons) of water to the meat mixture if it feels too dry to shape. If your family prefers more mushrooms, stir in a small can of drained sliced mushrooms or a handful of fresh mushrooms along with the soup and gravy mix—this technically adds an ingredient, but it keeps the spirit of the recipe intact. You can also swap one can of cream of mushroom soup for cream of onion or cream of celery to tweak the flavor while keeping the preparation the same. If you like a deeper, more savory gravy, whisk in a teaspoon of Worcestershire sauce or a dash of soy sauce with the soup and gravy mix before pouring it over the patties. For make-ahead convenience, shape the patties the night before, refrigerate them on a tray, and transfer them to the slow cooker in the morning. Leftovers reheat beautifully; store the patties in their gravy in the refrigerator for up to 3 days, or freeze for up to 2 months. Reheat gently on the stovetop or in a low oven, adding a splash of water if the gravy has thickened too much. To stretch the meal for a crowd, serve smaller patties over extra mashed potatoes or noodles and thin the gravy slightly with beef broth while it warms.