Please, I need some advice!!! I have to make a cake that looks like an Oreo cookie and want to know if anyone can give me any instructions how to do it. The woman who wants it wants to be able to cut through the entire cake. HELP!

Get the cake pans that make the "cookie" part.

http://www.williams-sonoma.com/products/goldtouch-nonstick-sandwich-cookie-cake-pan/

Please also see:

http://cakecentral.com/cake-decorating-ftopict-731591-.html

HTH