Pinkie Pie finds a magic button that makes instant cookies out of thin air.
Twilight Sparkle, understandably concerned and insatiably curious, turns to science for answers, and makes a terrifying discovery.
She and her friends soon find themselves in a race against time to save Ponyville, and all of Equestria, from a terrible chocolatey fate.
Also, kittens. Lots and lots of adorable fluffy kittens.
(Cookie Clicker crossover, because what better time for a Cookie Clicker crossover than several months after everyone stopped caring about Cookie Clicker?)
(Now featuring crappy cover art, created by me at 3 in the morning!)