Preheat oven to 350°F. Place parchment paper over a baking sheet.
Cut pumpkin down the center, stem to bottom.
Use a spoon to scrape out the seeds and stringy pulp.
Lay the pumpkin cut side down on the parchment paper.
Bake for 45 to 50 minutes. The pie should start to sink in or the skin look a little bubbly. It is done when it is tender when pierced with a fork.
Remove from the oven and allow to cool completely.
Peel the skin from the pumpkin.
Cut the pumpkin flesh into chunks.
Place the chunks in a food processor or blender and blend until smooth.
Place the puree in an airtight container and refrigerate it.