INGREDIENTS
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Ingredients
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2 tablespoons unsalted butter
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2 tablespoons all-purpose flour
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1 1/2 cups Gruyere cheese, shredded
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1/4 cup Parmesan cheese, shredded
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1 1/2 cups warm milk
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1/4 teaspoon salt
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1/8 teaspoon black pepper
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1/8 teaspoon fresh grated nutmeg
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8 slices French Bread
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12 slices ham, thinly sliced
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Dijion mustard