Vera Kerekes's Thanksgiving Dressing

1/2 loaf stale french bread, cut in small cubes
1 onion, chopped fine
3-4 sticks celery, chopped
1 package frozen chopped spinach, thawed
1 lb mushrooms, sliced
1/4 cup parsley, chopped
2 egg whites (or replacer)
salt and pepper to taste

Saute onions until browned. Add celery and mushrooms and cook
until soft, about 15 minutes. Mix cooked vegetables with bread and
remaining ingredients. Bake in casserole at 375 degrees for one
hour.