Christmas Day Breakfast Casserole

Ingredients:

4-5        slices sourdough bread-cubed
2           cups grated cheddar cheese*
1 lb       breakfast sausage
4-5        eggs
3/4 tsp  dry mustard
2 1/4     cups milk + 1/2 soup can milk
1           can condensed cream of mushroom soup (save can)

Preheat oven to 300 degrees.  Brown and drain grease from sausage.  Grease a 9x13 casserole dish, and add sourdough bread.  Sprinkle cheese on top of bread, then sprinkle sausage on top of cheese.  Beat eggs and add dry mustard and 2 1/4 cups milk.  Pour egg mixture over bread, sausage and cheese; referigerate overnight.  Prior to cooking, mix condensed soup with can of milk until combined.  Pour over ingredients in casserole dish and bake 1 hour in oven.  

*extra cheese will add to flavor