OREO is making that experience extra playful with the release of the Most Stuf OREO cookie – filled with the most creme ever – now found on shelves nationwide. To celebrate the newest limited-edition cookie, OREO is also introducing The Stuf Inside – a 30-day promotion that turns twisting open an OREO cookie into a fun-filled experience. The Stuf Inside uses image recognition technology to turn the "twist, lick and dunk" ritual into an OREO-first online experience for fans. Here's how to play: visit www.thestufinside.com to scan a single eligible OREO cookie with a mobile or tablet device revealing an animated OREO cookie. Twist open the animated OREO cookie to unlock the prize of the day and see if you've won.