INGREDIENTS
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1 (10 1/2 ounce) cans Campbell’s French onion soup
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1 1/2 lbs ground beef
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1/2 cup dry breadcrumbs
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1 egg
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1/4 teaspoon salt
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1/8 teaspoon ground black pepper, to taste
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1 tablespoon all-purpose flour
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1/4 cup ketchup
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1 -3 teaspoon Worcestershire sauce, to taste
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1/2 teaspoon mustard powder
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1/4 cup water