Cheesy Ham Hashbrown Casserole (1 serving) 1 (2 pound) package frozen hash brown potatoes - thawed 1 (8 ounce) package sliced ham - chopped 2 (10.75 ounce) cans Cream of Potato soup 1 (16 ounce) container sour cream 2 cups shredded sharp Cheddar cheese 1 and 1/2 cups grated Parmesan cheese Preheat oven to 375 degrees F (190 degrees C). Lightly grease a 9x13 inch baking pan. In a large mixing bowl, combine potatoes, ham, potato soup, sour cream and Cheddar cheese. Sprinkle with Parmesan cheese. Bake in preheated oven until sauce is browned and top is browned - about 60 minutes. Serve immediately. The secret ingredient in this breakfast casserole is Cream of Potato soup. A combination of Cheddar and Parmesan make it genuinely cheesy. Mr Breakfast would like to thank mommagibs for this recipe. Recipe number 651. Submitted 9/15/2002.