Brunch Eggs

9-12 slices day old while bread without crusts
½ pound cheddar cheese, grated
½ pound Swiss cheese, grated
1 pound bacon, fried and crumbled
6 eggs
3 cups milk
½ tsp salt
1-2 cans mushrooms
 
Layer bread, cheese, bacon and mushrooms in a 9x13 greased dish.  Beat eggs with milk and salt and pour over.  Let set overnight.  Bake at 350º for 45-60 minutes.