1. Heat oven to 425 degrees F. Place pumpkin or winter squash in a large, deep, heavy baking dish.
2. Add enough water to the pan to come a third of the way up the side of the pumpkin or winter squash.3
3. Cover the pan tightly with foil and bake until the pumpkin or winter squash softens, about 45 minutes. Let the pumpkin or winter squash cool before cutting it open, removing the stem, and separating the seeds from the pulp.