Cheesy Ham and Hash Brown Casserole

I made these hash browns for a brunch recently...delicious! This recipe can be prepared the night before so all you have to do in the morning is pop it in the oven.

1 (32 oz) pkg frozen hash browns (southern style type)
1/2 lb cooked, diced ham (I used Black Forest from the deli)
2 (10.75 oz) cans cream of potato soup
1 (16 oz) container sour cream
2 cups shredded sharp cheddar cheese
1 1/2 cups grated/shredded Parmesan cheese (I used the kind sold in a bag near all the other shredded cheeses)

Preheat oven to 375 degrees. Lightly grease a 9x13 dish. In a large bowl, mix hash browns, ham, soup, sour cream and cheddar cheese. Spread evenly into prepared dish. Sprinkle with Parmesan cheese. Bake approximately 1 hour in preheated oven until bubbly and lightly browned.

(Recipe adapted from allrecipes.com.)