Scrub the outside rind of the pumpkin with soap and hot water. Rinse well and dry.
Using a peeler, peel of as much of the rind as you can. This should make cutting into the pumpkin easier and less hazardous. The skin starts to get very thick if the pumpkin has been stored awhile.
Start by cutting the pumpkin in half. Set the pumkin on a non-slip surface as you get started with cutting into it. A towel on a cutting board can work. Once you get the knife safetly into the pumpkin, you can remove the towel. This just helps you get leverage on the pumpkin.
Remove the inner seeds and strings.
Quarter the pumpkin.
Preheat oven to 400 degrees. Rub high heat cooking oil on the inner flesh of the pumpkin and put flesh side up. Roast for 20 minutes, then check by piercing flesh with a fork.
After 20 minutes you can add additional roasting oil and spices such as cinnamon, nutmeg, and a little brown sugar if you are using the pumpkin for something sweet. If not, just brush with additional oil and continue cooking until tender.
Cool pumpkin. Then place flesh into food processor and blend. If you left the rind on, be sure to scoop the flesh out of the rind and discard rind.