Moreos are not an actual product created and produced by Nabisco, the company that manufactures Oreo cookies. The concept was actually invented by Bear Silber of the blog Tap Tappings, and photographs posted online subsequently went viral.
Photographs of Moreos were initially posted by Reddit user eternallyxiii, after which they quickly began to circulate around other social media sites. The concept also gained traction from several news agencies who published articles endorsing it. Silber has made efforts to contact Nabisco in hopes that the company might want to take advantage of the idea and create an actual product based on it, but as of 2014, Moreos have yet to reach store shelves.