Preheat your oven to 400°F and get a baking sheet ready with parchment paper to prevent sticking.
Clean the pumpkin by giving it a good rinse and patting it dry. Carefully cut the pumpkin in half, working around the stem, and then pull the halves apart.
Remove the seeds and stringy parts from inside the pumpkin. If you like, sprinkle a little salt on the flesh for added flavor. Place the halves cut-side down on your prepared sheet.
Bake the pumpkin until it's tender and separates easily from the skin, which should take about 45 to 60 minutes.
Once the pumpkin is cool enough to handle, scoop out the flesh and puree it in a food processor until smooth.