I got this from Epicurious.com but I think it was originally from Gourmet Feb 1999. It's so easy, it's probably the only recipe I've actually memorized. And it's so delicious, I'll make this at least once a week. It freezes well too. I've frozen it for a few months and it came out great. I've used chicken breasts as an easy, healthy way to add the chicken, but the best chicken to use is left over roasted chicken from the store.