"Classic diner-style patty melts at home ~ ground beef patties grilled on rye bread with Swiss cheese and caramelized onions...."
INGREDIENTS
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2 yellow onions, sliced
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2 tbsp butter
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Kosher salt and freshly cracked black pepper
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1 lb ground beef ((not lean, use ground chuck))
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4 slices Swiss Cheese
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4 slices rye bread with caraway seed
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More softened butter for spreading on bread
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Optional: mayo, Dijon mustard, fry sauce, etc.