21 unconventional Oreo flavors that take the classic cookie to the next level

In 2012, Oreo released Birthday Cake Oreo (with birthday cake-flavored creme dotted with colors to resemble sprinkles) as a limited-time item. Due to its popularity, the brand kept it on as a permanent flavor.

Eagle-eyed shoppers spotted this limited-time flavor as early as January. This cookie is made with cream cheese frosting-flavored creme, sandwiched between two carrot cake-flavored cookies.

Serious Eats tasted Lemon Oreos and likened the flavor of the vanilla cookies to Vienna Fingers and found the filling to be "bright and tangy." While these cookies didn't top our list, they're a favorite for many Oreo fans.

Like the Carrot Cake Oreos, these cookies feature a cream cheese-flavored filling but instead of carrot-cake flavored cookies, they're red velvet wafers. In our taste test, we found that the cookies (sans filling) tasted no different from the chocolate cookies in classic Oreos.

These flavorful treats have a bright-red filling and have been a hit with consumers. 

Cinnamon Bun Oreo is a newer flavor and got rave reviews in our taste test. 

Filled with peanut butter creme, we imagine these cookies would be a favorite for "The Parent Trap" twins Hallie and Annie, fictional characters (both played by Lindsay Lohan) who both ate Oreos with peanut butter.

For chocolate lovers, this chocolate-chocolate combination (chocolate cookies and chocolate-flavored creme) is a winning combination.

A permanent flavor introduced last year along with Pistachio Thins, these Oreos sandwich a peanut butter and chocolate-flavored creme between two graham-flavored cookies.

Though this is a limited-edition treat, it's come back for a few falls in a row. 

Though this didn't fare too well in our rankings, many fans liked this spin on a classic spread. 

Our favorite Oreos from the taste test, Mint Oreo reminds us of Girl Scout Thin Mints.

This flavor hit supermarket shelves at the beginning of this year. It takes Chocolate Oreos up a notch with a deep chocolate-flavored creme.

Swedish Fish Oreos were only available at Kroger stores but that didn't stop them from making a splash online. 

Every fall there is a bevy of pumpkin-spice-flavored products, and these treats often make an appearance. 

Hot Cocoa Oreos were a limited-edition flavor for the colder months and fell into the trend of hot cocoa-flavored treats. 

Two lightly sweetened golden wafers sandwich the classic Oreo creme filling to create the Golden Oreo.

This limited-edition cookie looked just like the classic but was later revealed to have Fruity-Pebble-flavored creme. 

This limited-edition treat features crunchy millet pieces.

Cherry Cola Oreos are a snack version of the classic soda pop and have a two-toned creme inside. 

This snack hit shelves for a limited time in 2017 and delighted fans of this classic sandwich.