Mashed potato casserole

With some leftover ham from Thanksgiving and leftover mashed potatoes from Thanksgiving weekend, I decided to get rid of them all by making a casserole.  The great thing about this idea is that anything that complements potatoes would work well in the casserole.  I started out by layering the mashed potatoes, mozzarella cheese, chopped ham and topping it with more cheese.  I decided to amp up the flavor a bit by mixing garlic powder, onion powder and dried parsley with the potatoes (also stir in some milk if they need moistened.)  After that I decided to mix it all together instead of doing a layer-thing.  Bake in the oven at 350 degrees for 20 minutes, then broil on low for 4-5 minutes to brown the top.