I can't even begin to tell you how awesome and yummy this dish is. It's great for brunches, breakfast or just as a one-dish meal at dinner! I always add 2 serrano peppers because DH and I like it hot! I hope you enjoy!
This is very important: Microwave the whole bag of potatoes for 5-10 minutes before starting casserole. You want them completely defrosted and even slightly cooked.
Mix all ingredients, RESERVING 2 CUPS CHEESE, in large mixing bowl.
Pour mixture in a greased 9x13 casserole baking dish.
Bake covered at 375 degrees for 1 hour.
Top with remaining 2 cups cheese.
Bake uncovered for another 5-10 minutes or until bubbly!