1. Combine tahini and lemon juice in the bowl of a food processor. Process for approx. 1 minute. Scrape down sides of bowl, then process for another minute, or until tahini becomes thicker and lighter in color.
2. Add olive oil, garlic, pumpkin pie spice, cumin and salt and process for 30 seconds to a minute.
3. Add pumpkin and half of the garbanzo beans and process for 1 minute. Add remaining garbanzo beans and process for an additional 2 minutes or until thick and smooth. If hummus is too thick, slowly add in water while food processor is running until it gets to the desired consistency.
4. Once desired consistency is reached, add in cilantro and process for an additional 30-45 seconds.
Notes
The number of limes you use will depend on the amount of juice they have. You are looking for approximately 3-4 tablespoons of lime juice. Also, I love cilantro, so I added a ton. If you don't like it as much, feel free to use less.