Mix up a medium batch of epoxy with some sawdust of the woods used, and just fill in the crack. You may have to do this twice, as that is a pretty big crack. Sand and refinish...no one will even know there was a crack at all.
Now, all seriousness asiderolleyes, that is a great, and creative design plus execution. Great work!
If you want to do another split design, flip it over like a pair of boxers or jeans.
Then you can have Drawers in Drawer!.......or Boxes in Boxers!:biggrin: