The spinach puffs are a famous recipe by Kronk. They consist in a simple cooked dough filled with spinach. The puffs were seen a number of times from The Emperor's New Groove on, and are one of Kronk's most famous dishes and probably his favorite one, since Kronk has gagly shown a kind of adoration by the puffs.
They were seen at the first time in The Emperor's New Groove when Kronk was serving the dinner for Kuzco and Yzma. In Kronk's New Groove, Kronk becomes a popular chef and never forgets about his famous recipe, likely constantly preparing it for hungry customers. At The Emperor's New School, Yzma sometimes uses the puffs to force Kronk into taking part in her plans. The puffs are shown as a gag in the storyline at a lot of times.