INGREDIENTS
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1 (10 ½-ounce) can French onion soup
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1 1⁄2 lbs ground sirloin
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1⁄2 cup dry breadcrumbs
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1 large egg
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1 yellow onion, chopped fine
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Salt and ground black pepper, to taste
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2 tsp. onion powder
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1 tbsp. flour
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3/4 cup ketchup, divided
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3 tsps. Worcestershire sauce, to taste
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1⁄2 tsp. mustard powder
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1 cup beef broth