A warm, spicy butternut squash soup that's perfect for fall.
In a 6 qt pot (or larger), saute onion in olive oil for one minute. Add cubed butternut squash and stir, cooking for about 2 minutes.
Add the spices, salt, and water. Stir, simmer on medium low for about 25 minutes, until the squash easily falls apart. Add the butter, and stir to melt.
Using an immersion blender, puree the soup completely (alternatively, you can puree in batches in a regular blender. However, be careful not to burn yourself). Add more salt to taste. Serve warm, garnished with sesame seeds, hot peppers, and chives (if desired).