1Cut off the tip of the garlic head, drizzle with olive oil, add salt and pepper, wrap in tin foil, and bake at 350 degrees Fahrenheit for 45 minutes.
2Peel and wash about six large potatoes.
3Slice the peeled potatoes into thin pieces and place them in a bowl of ice-cold water to prevent browning.
4Grate Parmesan, cheddar, and mozzarella cheeses.
5Prepare the seasonings by combining 1 teaspoon each of paprika, oregano, salt, pepper, parsley flakes, and Lawry's seasoning in a small bowl.
6Melt half a stick of butter in a pan for the roux.
7Once the butter is melted, add 2 tablespoons of flour and stir until combined.
8Add 1 cup of milk and 1 cup of heavy cream to the roux.
9Add the prepared spices to the sauce and whisk to combine.
10Squeeze the roasted garlic cloves into the sauce and whisk until incorporated.
11Gradually add the shredded Parmesan, cheddar, and mozzarella cheeses to the sauce, stirring gently after each addition until melted and incorporated.
12Arrange the potato slices neatly in rows in a baking dish.
13Pour the cheese sauce evenly over the arranged potato slices.
14Sprinkle additional mozzarella, cheddar cheese, and parsley on top.
15Bake the potatoes at 350 degrees Fahrenheit for one hour.
16Broil the potatoes for a few minutes until the top is beautifully browned.
17Garnish with more parsley.
18Let the potatoes cool down slightly before serving to allow the cheese sauce to thicken.