1can, 10 3/4 oz each condensed cream of mushroom soup, undiluted
1tablespoonprepared mustard
2teaspoonsWorcestershire sauce
1large egg
1/4cupfine dry bread crumbs
1/4cupfinely chopped onions
kosher salt and freshly ground black pepper, to taste
1 1/4 to 1 1/2poundsground beef
2tablespoonsolive oil
1/4 to 1/2cupbeef stock, unsalted or low sodium
1/2teaspoongravy browning sauce, such as Gravy Master or Kitchen Bouquet, optional
fresh chopped parsley, for garnish, optional
Instructions
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In a large bowl, combine the condensed soup, mustard, and Worcestershire sauce; blend well. Set aside.
In another bowl, lightly beat egg; add bread crumbs, finely chopped onion, salt, and pepper. Add 1 tablespoon of the soup mixture and the ground beef; mix well. Shape into 4 large patties.
Heat the olive oil in a large skillet over medium-low heat. Brown the patties well on one side; turn carefully to brown the other side. They should be almost fully cooked. Drain off excess grease.
Meanwhile, in a bowl, combine remaining soup mixture with 1/4 cup of stock, or enough to make a gravy consistency (more if you use 2 cans of condensed soup); add gravy browning sauce, if desired. Stir well.
Pour the soup mixture over Salisbury steaks. Cover the skillet and simmer over low heat for about 10 minutes or until meat is cooked through. Remove the patties to a serving platter; spoon sauce over meat.