Preheat your oven to 350º Fahrenheit. Wash and dry each pie pumpkin thoroughly.
Cut off the stem and then slice the pumpkin in half from top to bottom. Scoop out any seeds and stringy pulp (save the seeds for roasting!)
Place each half cut-side up on a baking sheet lined with parchment paper. Bake for 45 minutes to an hour or until the flesh is soft and the skin can easily be pierced with a fork. (See note below on cooking time and amounts.)
Remove the pumpkins from the oven. Carefully peel off the skin, leaving behind the flesh. Blend or mash the flesh using a food processor, a food mill, or a potato masher until it is smooth and lump-free. If needed, add a tablespoon or two of water so the pumpkin blends easier.
The pumpkin puree can be used immediately, stored in the refrigerator for about 5 days, or cooled and placed into freezer-safe bags and frozen. One can of 100% pumpkin puree equals slightly under 2 cups homemade. Enjoy!
Notes
*The size of your pumpkins will affect the cooking time as well as how much pumpkin puree you end up with. After slicing in half, a pumpkin that measured 6" by 7" ended up yielding about 5 cups of pumpkin puree. A sliced pumpkin that measured around 5" by 5.5" yielded about 3 cups of pumpkin puree.