Step 1

Spray a 9x13 baking dish with non-stick cooking spray.

Step 2

Place bread in the prepared dish.

Step 3

Sprinkle the browned sausage over top the bread.

Step 4

Sprinkle the freshly grated cheese over top the sausage.

Step 5

In a medium-size bowl, beat together the eggs, milk, dry mustard, salt and pepper. Beat until all of the egg yolks are well mixed.

Step 6

Pour the egg mixture over the cheese.

Step 7

Cover the casserole with plastic wrap or foil and refrigerate overnight or for at least 6 hours.

Step 8

Preheat the oven to 350 degrees.

Step 9

Bake the casserole, covered with foil, for 30 minutes. Uncover and bake for an additional 15-20 minutes or until the middle of the casserole is puffed and set.

Step 10

Cut into squares and serve warm.