In a high-powered blender or food processor, blend the sesame seeds, olive oil, and chickpeas. (Note: Grind the seeds first in a spice grinder or coffee grinder for smoothest results.)
Add the pumpkin puree, maple syrup, cinnamon, nutmeg, cumin, and salt. Blend until smooth. Add the water if you want it a little thinner.
Taste the hummus and adjust the seasonings. This isn’t an exact science, so you’ll want to play with the proportions to get a flavor you love.
Transfer the mixture to a serving dish and serve with crackers, tortilla chips, or vegetable strips. Store leftovers in an airtight container in the refrigerator.