"A grilled cheese sandwich with Gruyere and caramelized onions..."
INGREDIENTS
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1 large red or yellow onion- thinly sliced about 1/8 thick
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1TBS oil
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pinch of salt
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4 slices of hearty bread or french bread
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2 TBS of butter
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1 cup of grated Gruyere cheese
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1 Tsp fresh thyme (optional)
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Whole Grain Mustard (optional)