Preheat the oven to 375. Rinse and dry the outside of your pumpkin.
Use a sharp knife to cut the pumpkin in half from the stem to the bottom. Use caution here.
Scrape out the seeds and strings with a spoon. You can roast your pumpkin seeds separately if you want to.
Brush the pumpkin inside and out with the oil. If you want to use a little salt, you can sprinkle on a pinch of fine sea salt here.
Place the pumpkin cut side down on a parchment lined, rimmed cookie sheet and bake on the center rack until a knife goes through without resistance--about 30 minutes depending on the size of your pumpkin.
Let the pumpkin get cool enough to handle then use a spoon to scrape out the flesh. For a smoother texture, mash, puree or blend the pumpkin flesh in a food processor or blender.
You can use your pumpkin as is, or place in a strainer or in cheesecloth over a bowl for several hours to remove additional liquid.