Combine frozen hash brown potatoes with sausage, eggs, and cheese for a hearty, 5-star-rated breakfast or brunch casserole that can be prepped ahead and. Dec 14, Sausage, Cheese, and Potato Egg Casserole-this easy breakfast casserole feeds a crowd and can be made in advance. It is perfect for. Beat eggs in a large bowl; stir in milk, salt, and mustard. Fold bread cubes, Cheddar cheese, and sausage into egg mixture. Pour into a lightly greased 7xinch baking dish. the BEST Breakfast casserole EVER!!!!! I promise!!! Eggs baked with sweet Italian chicken sausage, broccoli, roasted peppers and mozzarella cheese. I love the convenience of making a large breakfast casserole. Not just for breakfast! Try it for supper too because you can make it up to 12 hours ahead of time. Sep 11, Sausage Egg Cheese Biscuit Casserole is the ultimate breakfast! It's so simple to make and can be made in advance. So good!.