INGREDIENTS
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INGREDIENTS
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2 Tbsp butter
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2 Tbsp flour
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1 1/2 cups milk
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A pinch each of salt, freshly ground pepper, nutmeg, or more to taste
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6 ounces Gruyère cheese, grated (about 1 1/2 cups grated)
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1/4 cup grated Parmesan cheese (packed)
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8 slices of French or Italian loaf bread
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12 ounces ham, sliced
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Dijon mustard
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METHOD
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1 Preheat oven to 400°F.
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2 Make the béchamel sauce: Melt butter in a small saucepan on medium/low heat until it just starts to bubble. Add the flour and cook, stirring until smooth, about 2 minutes.
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Slowly add the milk, whisking continuously, cooking until thick. Remove from heat. Add the salt, pepper, and nutmeg.
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Stir in the Parmesan and 1/4 cup of the grated Gruyère. Set aside.
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3 Toast bread slices in oven: Lay out the bread slices on a baking sheet and toast them in the oven, a few minutes each side, until lightly toasted. For extra flavor you can spread some butter on the bread slices before you toast them if you want.
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(Alternatively, you can assemble the sandwiches as follows in step four and grill them on a skillet, finishing them in the broiler with the bechamel sauce.)
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4 Build the sandwiches: Lightly brush half of the toasted slices with mustard. Add the ham slices and about 1 cup of the remaining Gruyère cheese. Top with the other toasted bread slices.
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5 Add bechamel, more Gruyere: Spoon on the béchamel sauce to the tops of the sandwiches. Sprinkle with the remaining Gruyère cheese.
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6 Broil till bubbly: Place on a broiling pan. Bake in the oven for 5 minutes, then turn on the broiler and broil for an additional 3 to 5 minutes, until the cheese topping is bubbly and lightly browned.
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If you top this sandwich with a fried egg it becomes a Croque Madame