Don't grasp the oreo too tight, and definitely don't wiggle the cookie back and forth. Grasping too tight or wiggling may lead to the filling failing to separate cleanly.
[header] How to eat an oreo cookie [title] Properly grip the oreo. [step] Grasp each half of the oreo cookie softly but firmly with the fingertips of both of your hands. Being smooth and stable is the key here.