Country Sausage and Potato Casserole

2 cups frozen hashbrown potatoes
2 Tbsp. chopped onion
2 T. butter
1 cup shredded cheddar
1 lb. bulk breakfast sausage, cooked and drained
4 oz. canned, sliced mushrooms
4 eggs
1/2 cup milk
1/2 tsp. salt
1/4 tsp. pepper

Fry potatoes and onions in 2 Tbsp. butter until golden brown; place in greased 8 or 9 inch glass baking dish. Top with cheese. Crumble sausage and spread over cheese; top with drained mushrooms. Combine eggs, milk, salt, and pepper; pour over sausage. Bake at 350 for 30-35 minutes.

For a huge pan (10 x 15) use: 10 cups hashbrowns, 2 lbs sausage, lots of cheese, 12 eggs, 1 1/2 cups milk.