The fast-food chain is offering multiple limited-edition treats in honor of their 50th birthday — and ... chocolate and vanilla—ever. The Birthday Cake Frosty and Birthday Cake Frosty Cookie ...

The Birthday Cake Frosty will be on the menu for a limited time only. In a statement, Wendy's said: "In honor of our 50th, celebrate with us by enjoying a Birthday Cake Frosty Cookie Sundae.