Dad's Thanksgiving Dressing

4 cups onion, chopped
2 cups celery, chopped
2 packages breakfast sausage
4 cups mushrooms, chopped
4 cups granny smith apples, cubed
1 package bread crumbs
1/2 cup butter or margarine
chicken or turkey broth
salt
pepper
seasoning salt
parsley
sage
thyme

*Cook sausage in large skillet, then set sausage aside.

*Discard grease and saute onion and celery in 1/2 cup butter.

*Combine all ingredients and season to taste.

*Add broth to slightly moisten.

*Cover baking dish with foil and bake at 350* for 30-40 minutes until heated through.