I'm looking for a sugar-free chocolate cake recipe to use for my pastor. He has been requesting for this cake for quite some time!

I'm looking for something I can whip up pretty quickly, and not have to go to the grocery store. Most recipes I have found call for a lot of Splenda -- which I don't have. I have a lot of Equal packets, unsweetened chocolate, and cocoa powder.

Any suggestions? Or how would I take a regular cake recipe and make it sugar free? Anything will help!