1. Heat oven to 350 degrees. Cut squash into quarters; remove seeds.
Place, cut side down, in ungreased shallow baking pan. Bake at 350 degrees for 45 to 50 minutes or until tender. Cool slightly.
2. Grease 1-quart casserole. Scoop squash pulp from skin; place in medium bowl. Discard skin. Add brown sugar, salt, cinnamon, 1/4 teaspoon nutmeg, and margarine to squash. Mix with potato masher or fork until well blended. Spoon into greased casserole. Sprinkle with chives and 1/8 teaspoon nutmeg.
3. Bake at 350 degrees for 20 to 25 minutes or until thoroughly heated.
Nutrition Information Per Serving: 160 Calories, 7 g Fat, 210 mg Sodium