Add 2 cups of half&half to the potatoes.
Season with 2 tsp salt, 1 tsp black pepper and 2 tsp garlic powder. You will be layering the potatoes and half&half mixture with 5 cheeses and 1 1/2 cups 1/2 inch diced chopped ham. I used a 8x8x4 in glass dish to bake it in at 350* for 35-45 minutes.