Cut squashes in half, lengthwise through the stem. Scoop out seeds.
Preheat oven to 350 degrees F. Place about 1-inch of water in a large baking pan. Place squash halves, cut side up, in pan.
Fill the seed cavity of each squash half with 1/2 tbs of butter and 1 tbs brown sugar.
Bake, uncovered, for about 1 hour or until squash is fork tender. Brush entire edible portion with syrup that formed in the seed cavity.
Serve immediately. Serves 4.