Triple Cheese Strata

Directions

1. 1
   Using a 10-inch frying pan, melt one tablespoon butter over medium heat.
2. 2
   Add mushrooms, onion and marjoram and cook until onion begins to turn clear.
3. 3
   Remove from heat.
4. 4
   Spread remaining 2 tablespoons butter over one side of day-old bread.
5. 5
   Cut bread into 1/2-inch cubes leaving crusts on.
6. 6
   Using casserole dish, layer half the bread cubes on the bottom of dish.
7. 7
   Cover with the mushroom-onion mixture.
8. 8
   Combine all three cheeses and dry mustard. Sprinkle over mixture.
9. 9
   Top with remaining bread cubes.
10. 10
    Mix milk, eggs, salt and pepper.
11. 11
    Pour over the bread and cheese.
12. 12
    Cover and refrigerate at least 3 hours or overnight.