Preheat oven to 350°. Scoop out and discard seeds from squash. Place cut side down in a 13x9-in. baking dish; add water. Bake, uncovered, for 45 minutes.
If necessary, drain water from pan; turn squash cut side up. Combine syrup, brown sugar, cinnamon, ginger and salt; pour into squash halves. Bake, uncovered, 10 minutes or until glaze is heated through.