Adapted from Food.com (http://www.food.com/recipe/breakfast-casserole-supreme-35775)
1 sweet onion, chopped
1 (24 oz) bag frozen hashbrowns (cubed not shredded)
12 eggs beaten
1/2 - 1 lb sausage, ham, or bacon, crumbled or cubed and cooked
2 C cheese, shredded
salt and pepper to taste
Spray a 9x13 pan.
Spread frozen hashbrowns on the bottom of the pan.
Sprinkle chopped onions on top.
Add salt and pepper.
Sprinkle meat on top.
At this point you can continue or put the casserole in the fridge overnight.
Pour beaten eggs over top.
Sprinkle cheese over top.
Bake at 350F for about an hour or until the eggs have set. Serve with salsa or ketchup.