Cook onion in Earth Balance and saute until onion is translucent and tender.
Stir in flour and whisk well.
Gradually add in chicken broth, while stirring.
Then add in rice milk, while whisking.
Continue whisking until slightly thickened.
Add chicken, rice, salt, pepper, and parsley.
Pour in greased casserole dish and bake at 350 for 25-30 minutes.