Pop-Tarts, one of the best snacks for breakfast time - or anytime - is celebrating its 50th birthday.

Pop-Tarts were a favorite for 90s kids, and were the number one best-selling Kellogg's product of the decade.

90s kids were such a good fan base for the product that it 2004 marketers asked 10-12-year-old kids to help them rebrand Pop-Tarts.

Kids were asked what a Pop-Tart kid would look like. The most common response was a Pop-Tart pastry with a fun personality and bright colors. This is how Consumer Knowledge says the product got its "Crazy Good" slogan and silly Pop-Tart cartoon.

Throughout the years, Pop-Tarts kept kids on their toes with fun, new limited edition flavors.

In honor of Pop-Tarts' 50th birthday, let's take a look at some of the best limited edition treats they offered us over the years:

Pop-Tarts are also bringing back these two amazing limited edition flavors in celebration of their 50th birthday: