Prepare your mise en place.
Using a sharp knife, carefully cut the squash in half crosswise. Scoop out and discard the seeds and stringy pulp. Season the flesh with salt and pepper to taste. Place cut side down in a shallow baking dish. Add ½ cup water and cover the dish with aluminum foil. Place in the oven and bake for 35 minutes. Remove from the oven and invert the squash. Set