Cut squash in half, discard seeds and place cut side down in baking dish with hot water half inch deep. Bake uncovered at 350 for 40 minutes

In a large skillet, saute apple and onion in butter until tender, about 10 minutes

In a large bowl, combine apple mixture, cheese, raisins, and cinnamon (and optional bacon).

When squash are done, turn them over and stuff with apple mixture. Bake