Sauce:

• ½ cup butter
• ½ cup all-purpose flour
• 3 cups milk
• 6 tablespoons grated Parmesan cheese
• 1 egg, beaten
• 2 tablespoons heavy cream

Sandwiches:

• 8 slices white bread, toasted
• 2 pounds sliced roasted turkey
• 1 tomato, thinly sliced
• salt and pepper to taste
• ¼ cup grated Parmesan cheese
• 8 slices crispy bacon

Make sauce: Melt butter in a saucepan over medium heat. Whisk in flour; cook and stir until it begins to brown slightly. Gradually whisk in milk so that no lumps form; bring to a boil, stirring constantly. Mix in Parmesan cheese and stir in beaten egg to thicken; remove from heat and stir in cream. Preheat the oven’s broiler. Make sandwiches: For each hot brown, place two slices toast into the bottom of an individual-sized casserole dish. Cover with a liberal amount of roasted turkey and tomato slices. Season with salt and pepper; spoon sauce over top of each one and sprinkle with Parmesan cheese. Place the dishes under the preheated broiler and cook until speckled brown on top, about 5 minutes. Remove and arrange two slices bacon in a cross shape on top of each sandwich.