Cheesy Potato Breakfast Casserole

1 pound Italian Sausage (or regular sausage), cooked
1 yellow onion, chopped, sauteed in sausage grease
7 eggs
1/2 cup milk
20 ounce bag frozen Ore-Ida Diced Hash Browns
4 ounces of Mild Cheddar Cheese, grated
4 ounces of Monterrey Jack Cheese, grated
Salt & Pepper, to taste

Preheat oven to 350. Spray medium casserole dish (9 x 13) with non-stick spray. Set aside. Prepare sausage and onions. In a large mixing bowl, combine all ingredients, including sausage and onions. Pour into prepared casserole dish. Reserve roughly one cup of the cheese for topping. Bake for 35-45 minutes. Remove from oven and top with reserved cheese. Return to oven for 5-8 minutes. Allow casserole to rest for 15-20 minutes. Serve and enjoy!

Also fabulous served in flour tortillas for a great breakfast burrito.

Recipe adapted from here