Salisbury Steak TV Dinner

Name: Salisbury Steak TV Dinner
Prep time: 25 min
Cook time: 1 h
Total time: 1 h
Yield: 4 portions
Ingredients: 16 oz lean ground beef; 2 oz bread crumbs; 1 tsp mustard powder; ¼ tsp ground black pepper; 1 pinch ground cayenne pepper; 1 oz ketchup; ½ oz Worcestershire sauce; ½ oz soy sauce; 1 oz unsalted butter; 1 ½ oz all-purpose flour; 4 oz yellow onions; 12 oz cremini mushrooms; 16 oz beef broth; 1 oz ketchup; ½ oz Worcestershire sauce; ½ tsp salt; 16 oz fresh green beans; 30 oz water; 18 oz russet potatoes; 1 oz unsalted butter; 2 oz heavy whipping cream; ½ tsp salt; vegetable oil; Italian parsley