"Make an open-faced croque madame with creamy béchamel, ham, and melted cheese. This simple French sandwich is perfect any time of the day...."
INGREDIENTS
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1 tablespoon salted butter
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1 tablespoon all-purpose flour
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⅛ teaspoon salt
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⅛ teaspoon pepper ((white or black pepper))
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⅛ teaspoon ground nutmeg
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½ cup whole milk
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1 tablespoon salted butter (-divided)
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1 slice sturdy, hearty bread (such as white, wheat, or sourdough.)
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1-2 slices deli ham
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⅓ cup shredded Gruyére cheese
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1 large egg