Making pumpkin puree is a relatively easy process. First, you will need to preheat your over to 325 degrees. Then, take a small pumpkin and cut it in half, lengthwise. Be sure to take out all of the seeds and pulp. Cover each pumpkin half with tin foil and bake them for about an hour or so. Then scrape out all of the softened pumpkin and puree it in your blender. You may want to strain the puree to make sure there is no stringy bits left. Your puree can be kept in the freezer for later use.