Nabisco rolls out a new Oreo and a new Oreo offer.

FOX's Lilian Woo reports:

We're hearing 'Double Stuf' about the Oreo cookie. First the unveiling of the newest Oreo flavor, the 'Firework' Oreo, a chocolate sandwich containing cream filling sprinkled with red and blue popping candy, which has been described as similar to Pop Rocks.

Then word of the next new flavor, which will come from a fan of the Oreo. Nabisco's parent company inviting cookie lovers to come up with that, it will also be the golden ticket to a half million dollars for the winner.

Submissions can be made through Twitter and Instagram using #MyOreoCreation and #Contest. Suggestions already popping up on social media ranging from cookie dough flavor to funnel cake explosion.

Lilian Woo, FOX News.

Follow Lilian Woo on Twitter: @LilianNY