1 pound Beef Round Steak -- cut 1/2-3/4 inch thick 2 tablespoons cooking oil 1 small onion, sliced and separated into rings 2 tablespoons margarine 1 can (4 Oz.) Mushroom Stems And Pieces -- drained 1 tablespoon lemon juice 1 teaspoon dry mustard 1/2 teaspoon Worcestershire sauce
Cut meat into 4 serving-size pieces; pound to 1/4 inch thickness. Cook meat, 2 pieces at a time, in hot oil for 2 minutes. Turn; cook 2 minutes more. Remove to a warm platter. Cook onion in margarine until just tender; add mushrooms, lemon juice, mustard, Worcestershire, 1/2 teaspoon salt, and dash pepper; heat through. Spoon over steaks; sprinkle with snipped parsley, if desired.