Preheat oven to 350 degrees. Coat a 13" x 9" x 12" baking dish with non-stick cooking spray.
Remove casing from sausage (unless using bulk sausage) and cook sausage in large non-stick skillet over med-high heat until browned, stirring to crumble. Remove from heat, remove sausage from skillet with a slotted spoon and set aside. Drain and wipe drippings from skillet with a paper towel.
Heat oil in skillet over med-high heat. Add onion, celery, green pepper, garlic and saute for about 5 minutes or until tender. Remove from heat, stir in sausage, rice and remaining ingredients. Mix well.
Spoon rice mixture into prepared baking dish, cover and bake in preheated 350 degree oven for about 1 hour, 5 minutes or until liquid is absorbed. Remove from oven, discard bay leaf and fluff rice with a fork. Sprinkle top with fresh parsley or green onion pieces if desired.