INGREDIENTS
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6 to 8 ounces slices mushrooms
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1/2 sweet onion, sliced
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1 1/2 cups beef broth
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1 pkg Brown Gravy or Au Jus Mix
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2 tbsp ketchup
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1 tbsp country dijon mustard
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1/2 tsp Worcestershire sauce
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1 tsp parsley
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1 1/2 lb lean ground beaf
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1 egg yolk
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1/3 tsp onion powder
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1 tsp garlic salt
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1/2 cup panko crumbs
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1/4 cup milk
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2 tbsp corn starch
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1/4 cup water