First, wash pumpkin off. Then cut the top center around the stim off.
Scoop out all the seeds.
Add one cup of water to the inner pot and put the trivet in the bottom. Place the whole cleaned out pumpkin on the trivet.
Place the lid on the pot and lock it into place. Make sure the valve is on seal.
Push the manual button and add cook time to 12 minutes.
After it beeps that it is done, allow it to NPR (natural pressure release) for 10 minutes until the seal drops.
When the pressure is out, remove the lid and allow to cool for another 5 to 10 minutes until it is cool enough that you can touch the pumpkin.
Next, dump any water out of the pumpkin and the pot.
Using a spoon, scrape out the meat of the pumpkin and put it back into the empty pot.
Use a hand blender or potato masher to blend until puree is smooth.