Rinse the pumpkin. Cut in half and slice it into thick pieces.Line a baking sheet with parchment.Arrange pumpkin pieces on a baking sheet in one layer. Sprinkle with salt if using.
Bake
Bake pumpkin for about an hour; or until the flesh is very soft. Not just fork tender. The flesh should easily tear when you use a fork.Remove baked soft pumpkin from the oven, and allow to cool for a couple of hours.
Remove Flesh
Use a spoon to remove the seeds.Into a mixing bowl spoon all the soft pumpkin flesh. Discard the skin.
Puree
Puree pumpkin flesh with an immersion blender or use a food processor, pulse until smooth.
Cooking Down Water Puree
If the puree is too watery, pour it into a wide skillet and cook it down to evaporate the excess water and make it thicker.
Notes
HOW LONG DOES PUREE LAST? - In the fridge for up to a week.CAN FRESH PUMPKIN PUREE BE FROZEN? Yes, you can freeze it for up to 6 months. Frozen puree, when thawed, can contain more water; this is normal. All you need to do is cook it down in a skillet to evaporate excess liquid.