Mrs. Claus has finished her Christmas preparations, and Casey Webb challenges three teams of master holiday bakers and their ice sculptors to show off a new side of Santa's better half in out-of-this-world cake designs and displays. The teams pull out all the stops to impress judges Jocelyn Delk Adams, Amanda Freitag and Zac Young, and the most impressive cake advances one team to the grand finale.

• Casey Webb