Beth's Breakfast Casserole

This one comes from my sister, Beth....

8 slices of bread, any kind
1# sausage cooked and drained
1 can cream of mushroom soup
1 dozen eggs
1 2/3 cups of milk
1 TB salt
2 cups grated sharp cheddar cheese
1 small can mushrooms

Dice bread and *pam* a 9x13 pan. and line with the bread.
Spread sausage over bread, then cheese.
Mix 1 cup milk and 1 dozen eggs.
Mix 2/3 cup of milk with soup. Mix eggs and soup mixtures together.
Pour oven rest evenly. Spread mushrooms on top.
Ref. overnight. Bake 350 45 mins or more.