There is no cooking involved with raw, because thats what it is, raw
You can either buy premade raw such as natures variety or primal (there are others too).
http://www.primalpetfoods.com/ http://www.naturesvariety.com/
Or you can do it yourself feeding raw meaty bones, muscle meat, organ meat and if you like other stuff too such as raw eggs, live yogurt, fish etc. I do it myself.
http://www.rawdogranch.com/ http://www.njboxers.com/faqs.htm http://rawfeddogs.net/ http://www.ruffkutz.co.uk/page4.htm http://www.rawlearning.com/ http://www.rawmeatybones.com/ http://www.raw4dogs.com/calculate.htm
There is a great thread going in the diet section at the moment called Raw Diet: Info needed, its pretty long, you might want to check it out.