It's cookie week, where the bakers will have to put modern spins on classic cookies. For the signature, they are asked to make icebox sandwich cookies. Icebox cookies historically have been refrigerated dough in a log for those sweet treat emergencies to slice off and bake as needed. Beyond the time restriction limiting how long they can chill their dough, the bakers will have the challenge of having a multi-colored dough to exhibit a "picture" in the cookie. They also have to ensure their sandwich filling is firm enough so as not to ooze out when biting into the sandwich. For the technical, each baker is required to make twenty pirouette cookies. Because of how thin the cookies are and that they need to be rolled immediately after being baked, there is a fine line of minutes between the cookies being underbaked and overbaked. The bakers also have to ensure the hazelnut chocolate filling is thin enough to be able to pipe into the cookies, yet thick enough so that it does not drip out the ends of the cookies. And for the showstopper, each will make a mosaic out of cookies. There will be two cookie elements: a base upon which the mosaic tiles will be placed to display a picture. Most of the bakers will color their tiles using tinted royal icing.
—Huggo