Cheesy Potato Topped Chicken

2 1/2 lbs potatoes , peeled and sliced thin 1 medium onion , diced 2 -3 cups cooked chicken, diced (or other leftover cooked meat) 2 cups cheddar cheese ,[...]

3 medium potatoes , grated 1 medium onion , grated (I use a red onion) 1 cup grated parmesan cheese 2 teaspoons chopped fresh thyme or 1 teaspoon dried thyme[...]

4 (14 1/2 ounce) cans reduced-sodium chicken broth 3 cups heavy cream 2 cups Simply Potatoes Traditional Mashed Potatoes 16 ounces shredded monterey jack[...]