1. Preheat oven to 350°.
2. Cut each squash in half crosswise; remove and discard seeds. Place squash halves, cut sides down, in a 15 x 10-inch jelly-roll pan coated with cooking spray. Bake, uncovered, at 350° for 35 minutes or until squash is tender.
3. Combine pineapple and remaining 4 ingredients; spoon mixture evenly into squash halves. Bake, uncovered, 10 minutes or until thoroughly heated.