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1
Melt 1/4 cup butter in a small saucepan over medium heat.
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2
Gradually stir the flour into the butter.
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3
Add small portions of the cream and wine alternately, whisking after each addition to thicken before introducing the next amount.
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4
Season with salt, pepper, and nutmeg.
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5
Melt the cheese into the liquid in small amounts, stirring continually.
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6
Reduce heat to low and keep sauce warm until using.
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7
Place a large skillet over medium-high heat.
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8
Spread 1/2 teaspoon of butter on one side of each slice of bread; spread about 1/2 tablespoon of Dijon mustard on the opposite side of each slice.
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9
Assemble the sandwiches by placing four slices of bread, buttered side down, into the skillet.
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10
Top each slice of bread with two slices of ham folded to completely fit on the bread; spoon equal amounts of the cheese sauce over the ham, reserving some of the sauce for later.
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11
Place the remaining slices of bread, mustard side down, atop the ham and cheese.
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12
Grill the sandwiches on each side until the bread is an even, golden brown color.
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13
Spoon a little of the cheese sauce on top of each sandwich before serving.
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14
Garnish each sandwich with 1 teaspoon of parsley.