Christmas Breakfast Sausage Casserole

1 pound pork sausage
6 slices of white bread, toasted and cut into cubes
1/2 pound shredded mild Cheddar cheese
1 teaspoon mustard powder
1/2 teaspoon salt
4 eggs, beaten
2 cups of milk

Crumble the sausage into a skillet. Cook over medium heat. Drain. Mix
together cooked sausage, toast, cheese, mustard, salt, eggs, and milk.
Pour into a greased, 9 x 13 inch baking dish. Cover. Refrigerate
overnight. Bake, covered, at 350ºF.(175ºC.) for 45 to 60 minutes.
Uncover, and reduce temperature to 325ºF.(165ºC). Bake for an
additional 30 minutes, or until set.