In a large saucepan, sauté onion and garlic powder in oil. Add the chicken, beans, broth, chilies and seasonings. Bring to a boil. Reduce heat: simmer, uncovered for 30 minutes.Remove from the heat; stir in sour cream and heavy whipping cream.
*sometimes I add more chicken broth, sour cream and whipping cream to make it a little more soupy.