Breakfast Casserole

1 lb frozen hash browns , partially thawed 2 cups low-fat cheddar cheese , shredded 6 large eggs 1 1/2 cups egg substitute 1 cup skim milk 1/2 teaspoon salt[...]

3 cups seasoned croutons 2 cups shredded cheddar cheese 2 lbs pork sausage 6 eggs 1 teaspoon dry mustard 2 1/4 cups milk 1 (4 ounce) can sliced mushrooms 1[...]