Brown sausage, cool and crumble into mixing bowl.
In a separate bowl, beat eggs; add milk, salt, mustard and bread cubes. Stir and add cheese and sausage.
Put into greased, 8” x 12” glass baking dish.
Bake at 350 degrees for 40 minutes.
This is great for guest breakfast as it makes a good one with fruit or juice and coffee and you can set table, etc. while it is cooking.