Croque Madame

Ingredients 5 tablespoons unsalted butter 1 tablespoon flour 1 cup milk 1/4 teaspoon salt Pinch of freshly grated nutmeg 1 cup grated Gruyere cheese 4 slices white bread 2 teaspoons Dijon mustard 3 ounces best-quality deli ham, thinly sliced 2 large eggs Ground pepper to taste Directions Preheat the broiler with the rack in the top position. In small saucepan, melt 2 tablespoons butter over high heat. Whisk in flour and cook until lightly golden. Add milk and salt and whisk constantly until mixture thickens, about 2 minutes. Remove from the heat. Stir into the sauce the nutmeg and half the cheese. Lay the slices of bread on a baking sheet. Divide the Dijon between 2 slices and top with ham. Divide half of the bechamel between the remaining 2 bread slices and top with remaining cheese. Close the sandwiches. Melt 2 tablespoons butter in a large skillet over medium heat. Add sandwiches and cook both sides until bread is golden brown and the cheese is m...