Mushroom Casserole

My brother, Paul, requested this one!  So, here it is!
It's one of those "special occasion" dishes!


Mushroom Casserole
1/2 small onion
2 boxes mushrooms, cut in half
1/4 c butter
Brown these in a deep skillet.
Add:
6 sliced bread, cubed
Mix well.  The bread will absorb the moisture from the mushrooms.
Then add:
1 c sour cream
8 oz. mozzarella, shredded
8 oz monterey jack cheese, shredded
salt/pepper to taste
Mix all together.  Reserve a little of both cheeses to put on top. Place mushroom mixture in deep baking dish..
Top with reserved cheeses.  Sprinkle with paprika,  Bake at 350* for about 30 minutes . . until bubbly.