Cut the top off your pumpkin, and scoop out all your seeds
Add 1 cup of water to your Instant pot, and place the steamer trivet in the insert. Add your pumpkin.
Close lid, and cook on high pressure for 15 minutes. Do a quick pressure release, and remove from the pot. Allow to cool.
When cool to the touch, scoop out flesh and strain out excess water if desired.
Place in a blender or food processor, and blend till smooth.
Portion puree either in freezer cube trays or in an air-tight freezer bag.
Store puree in an air-tight container in the fridge for 3-5 days, or in the freezer for up to 6 months.