Let the squash cool, and scoop the flesh from the skin. Place the flesh into a food processor or blender and pulse until smooth. Use what is needed for the recipe and portion the rest into 2-cup freezer bags, removing as much air as possible (to lessen the chance of freezer burn). If you have a food vacuum solution, vacuum seal on high. Press the pumpkin into all the corners and make as flat as possible. Label the bag with the date and place in the freezer. Use within 6 months.