Galleta World is a brightly colored world accessible from the candle in Lullaby Land.
Features
This world features lots of heart-shaped cookies scattered around, as well as square ones and circular ones stacked on top of each other. Some cookies are arranged to resemble the Kubo and Totsu symbols, as well as a large robot design. There are lots of NPCs in the area to that look like the heart-shaped cookies, each one making a different sound when interacted with. There are also large slices of cake and large puddings around.
Going in between two particular stacks of cookies will take you to a similar area, but now filled with various fruits instead of sweets, including cherries, oranges, melons, and apples. Southeast of this entrance is a cake with a door on it that cannot be entered currently. Nearby is a pink-haired NPC in a maid outfit named Trixie. Attempting to attack her with the Lily of the Valley effect will result in her unequipping your effect.
Directions
Totsutsuki's Nexus → Lullaby Land → Galleta World