Oreo is the Nabisco cookie made of two chocolate wafers with a sweet white cream filling. Its familiar sandwich-cookie design consists of cocoa-flavored biscuits joined by a sweet crème center, making Oreo the single canonical answer.
Nabisco introduced Oreo in the United States on March 6, 1912. The cookie was initially sold as a chocolate sandwich biscuit, and its embossed design has changed over time. The modern face design, incorporating the Nabisco logo, was developed in 1952.
The filling is often casually called “cream,” but it is technically a crème-style filling rather than dairy cream. Oreo’s original version uses chocolate wafers and a light filling, while later products have included golden wafers, flavored centers, thinner cookies, and varieties with extra filling.
Another frequently asked Oreo question concerns twisting the cookie apart. Research published in 2022 found that the filling tends to remain attached to one wafer rather than splitting neatly down the middle, so the classic twist-and-separate trick is less predictable than it looks.