Easy Salisbury Steak for the Family

Ingredients (12)

• ✓ 1 ½ pounds ground beef
• + 1 (10.75 ounce) can cream of onion soup, divided add to pantry
• + ½ cup panko bread crumbs add to pantry
• ✓ 1 egg
• + ½ (1 ounce) package dry onion soup mix (such as Lipton®), divided add to pantry
• + 1 pinch salt, or more to taste add to pantry
• + ⅛ teaspoon ground black pepper add to pantry
• ✓ 1 cup water
• + 1 (1.2 ounce) package roast beef gravy mix add to pantry
• + 2 tablespoons ketchup add to pantry
• + 1 ½ teaspoons Worcestershire sauce add to pantry
• + ¼ teaspoon dry mustard powder add to pantry