Add pumpkin seeds to the bowl of a food processor and process about 5 minutes, stopping a few times to scrape down the bowl, until a smooth and spreadable consistency is formed (after a few minutes it will form a fine meal, and then after a few more it will transform into a butter).
If desired, add in the maple syrup, coconut oil, cinnamon, and salt, and process a few more seconds, until everything is combined and smooth.
Enjoy on toast, in oatmeal, or with bananas, dates, sweet potatoes, or whatever your heart desires! Store in a sealed container or mason jar in the refrigerator.