Preheat oven to 400 degrees F and line large baking sheet with parchment paper.
Wash and dry pumpkin. Using a paring knife, pierce whole pumpkin about 10 times to allow steam to escape.
Place on a baking sheet and cook for 60 minutes. The actual cook time will depend on the size of squash, from squash to squash and your oven. Pumpkin is ready when its skin is darker and can be easily pierced with a fork.
Remove from the oven, place on a cutting board and let cool for 20 minutes.
Wearing an oven mitt, hold the squash and cut in half. Scoop out and discard the seeds.
To make pumpkin puree, scoop out the flesh with a spoon, transfer into a food processor and process until smooth, pausing and scraping the walls. You can also blend it with an immersion blender in a large mixing bowl.
Pumpkin puree is ready and you can use it in your favorite pumpkin recipes.
Notes
Store: In the refrigerator in an airtight container up to 1 week.
Freeze: Portion into containers and freeze up to 6 months.
Yield: You should get about 3 cups of pumpkin puree which equals 2 standard 14.5 oz cans.