Rich with melty Gruyère and a tangle of onions cooked down in butter, beef broth, a nip of thyme, and a splash of sherry, these sandwiches deliver everything you love about French onion soup (except the soup). Serve with a side salad.
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Delicious! I don't think I'll make a plain grilled cheese ever again. Good idea to make extra onions and freeze.
This sandwich was a wonderful winter's night sandwich when served with hot soup!
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