In a large pot, slightly saute the onion. Add the remaining vegetable in layers. Allow to cook on medium heat for 15 minutes. Add broth and seasonings.. Bring to a boil and simmer until the sweet potatoes are soft.
This is an easy soup to make and you can make it to your own preferences. I happen to love sweet potatoes, so I use more than the receipe calls for. Also, I add my tumeric a little at a time. You can also use more chicken broth. It also tastes great as a leftover because the flavors have time to "blend". If you've got more vegetables than liquid left, just add more broth.