I found a similar version of this recipe on my favorite food blog (thanks, Orangette). Serve this delicious soup with a big hunk of San Francisco's famous sourdough bread for an awesome fall meal. I realize how cheesy that sounds but seriously, you'll love it.
This recipe is from my friend Vanessa - she is a fabulous cook and is always making delicious food, including this awesome dip. She suggests adding a mango to the mix as a different option --- I highly recommend it!