1 pkg. of 32 oz. frozen hash brown potatoes
8 oz. cooked, diced ham
2 Small cans condensed cream of potato soup
16 oz. sour cream
2 cups shredded sharp Cheddar cheese
1 1/2 cups grated Parmesan cheese
Preheat oven to 375 degrees. Lightly grease a 9x13 inch baking dish. In a large bowl, mix hash browns, ham, cream of potato soup, sour cream, and Cheddar cheese. Spread evenly into prepared dish. Sprinkle with Parmesan cheese.
Bake 1 hour in the preheated oven, or until bubbly and lightly brown. Serve immediately.