Ask and you shall receive with this Best Breakfast Egg Casserole! It is LOADED with all the best stuff…spinach, mushrooms, sausage, bacon, onions, red peppers, colby jack cheese and a crescent crust! I will be making this ambrosial casserole as one of my main entrees for Christmas morning brunch. I love that you can prepare this the night before and have more time to enjoy the holiday….