Prepare wheat pilaf mix according to package directions.
Sauté sausage in oil in nonstick skillet, 4 minutes. Stir in pilaf, tomatoes, raisins and parsley.
Salt squash cavities if desired. Place, cut side up, in baking dish. Spoon 1/2 cup pilaf in each. Cover with foil coated with cooking spray.
Bake in preheated 350°F oven for 1-1/2 hours or until squash is tender.