Cut squash into halves; remove seeds.
Place squash, cut side down, in baking pan.
Pour small amount of water in pan.
Bake in 350-degree oven for 30 minutes.
Combine sausage, oats, salt, apple, onion, parsley and milk.
Make 18 balls; brown in slightly greased skillet.
Turn squash up; place 3 sausage balls in center of each squash.
Bake for 40 minutes longer or until squash is tender.