Kooky Cookie

The Kooky Cookie is found exclusively in Paper Mario. The main ingredients are Cake Mix and either a Koopa Leaf, a Stinky Herb, or a Maple Syrup. It restores fifteen Flower Points and will cause one of three status effects: Invisible, Electrified or Sleeping. It can be sold for 12 Coins.

This is an item Koopa Koot asks for. His specific cookie is made from Cake Mix and a Koopa Leaf, and he gives Mario one Coin in return.