Just half or quarter your pumpkin. Then clean out all the “gunk” inside, I saved some of the seeds to plant next year and the rest we Roasted for a Yummy Snack.
Once the insides are cleaned out just put the pumpkins in the slow cooker with about an inch of water. Cover and I cooked mine on high for about 2 hours. Once they become soft take them out of the cooker and allow them to cool.
Then once it becomes cool enough to handle scoop out the flesh put in a large bowl and blend into a puree. I used a immersion blender but you could put it in a blender or food processor, then let the liquid drain, I placed a flour sack or cheese cloth in my strainer so I did not loose any of the puree. Once it cooled and drained well put it in your freezable container, I put mine in freezer bags in 2 cup portions.
I am for anything that saves my family money, helps stock my pantry, and this way I know what my family is eating. Yes it takes a bit of time but for me it is worth it. I also get lots of free pumpkins from the garden but I have seen lots of people online getting free or almost free pumpkins the day after Halloween at their local grocery or from neighbors.