Take the sausage out of the casing, and fry it up, breaking it into small little pieces as you go. Cook thoroughly, then drain and pat the extra grease off with paper towels. Using maple flavored sausage gives it a sweet flavor that just can't be beat!
In another bowl, combine the mustard, salt, eggs and milk, mixing thoroughly.
Toast the slices of bread and slice into cubes.
Do NOT layer the bread instead of cubing it. The texture and end result is much, much different and I will be posting layered casseroles in the weeks to come. This one is unique and should be baked like the instructions.
Combine the egg mixture with the bread cubes and cheese. Pour into a very well greased pan and cover.
Refrigerate overnight.
The next morning, take it out, and preheat the oven to 350 degrees. Cover it and bake at 350 for an hour. Take the tinfoil off and add the shredded cheese on top. Turn the oven down to 325 and bake for another 30-40 minutes, until it's cooked in the middle. ( 165 degrees is the safe temp)