One of THE VERY BEST Salisbury Steak

One of THE VERY BEST Salisbury Steak
Ingredients
1 (10.5 oz) can Campbell’s French onion soup
1 ½ lbs ground beef
½ cup dry breadcrumbs
1 egg
¼ tsp salt
⅛ tsp ground black pepper
1 tbsp all-purpose flour
¼ cup ketchup
1-3 tsp Worcestershire sauce (to taste)
½ tsp mustard powder
¼ cup water
Instructions
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