Pre-heat oven to 400 F. Reserve 1-1/3 cup broth, then pour remaining broth into a shallow baking dish. Place squash cut-side down in the broth. Bake 30 minutes. In a medium saucepan over medium-high heat, heat reserved broth and butter or margarine until the butter (or margarine) melts. Stir in stuffing mix, pecans and raisins. Remove squash from oven, turn squash over, cut side up. Spoon stuffing into squash cavities. Bake 20 minutes more or until squash is is done, basting with broth every 10 minutes.