Sweetie Patrol Cookies come in a light-blue box with the word "cookies" on it in dark-red font. The cookies themselves resemble regular cookies. The recipe for them seems to be the same as a normal recipe for cookies, except for Plankton using nitroglycerin to substitute vanilla extract.
Role in episode
Plankton, disguised as a Sweetie Patrol girl, attempts to sell these cookies to Gary in an attempt to get the Krabby Patty secret formula. He wants to hide them in a "secret spot" but Gary doesn't fall for it and moves the couch with Plankton on it outside. Plankton is upset his plan failed and throws the cookies onto the ground, causing an explosion. It is revealed that Plankton used nitroglycerin as a substitute for vanilla extract.