I am cooking dinner for me and baby

tomorrow night, my plan is to have a chicken breast with a white cilantro/basil sauce drizzled over it, on top of a bed of mexican rice with black beans mixed in it.
I need some help in 2 categories here.
How should I go about making this white sauce (you guys that eat mexican food know what i am talking about)?
and what sides do you think would compliment this meal well?
thanks
o......and this is why
