Christmas comes to the kitchen in three rounds of Santa-themed baking. Guest judge: actress Tiffani Thiessen ("Saved by the Bell," "Alexa & Katie").

A carolling theme throws the contestants a curveball. But will their bakes hit a high note — or fall flat? Guest judge: cookbook author Donal Skehan.

The competition heats up with a wintry theme that sparks festive sweets and icy-cold flavors. Guest judge: Olympic ice dancer Meryl Davis.

Bakers race against the clock in three Charlie Brown themed baking challenges. Adam Rippon guest judges.

From edible ugly sweaters to boozy cupcakes: Guest judge Liza Koshy

Baking teams give the gift of good taste with delicious treats inspired by Christmas trees. Guest judge: Flour Shop owner Amirah Kassem.

Bakers compete in three rounds of gift themed challenges.

Bakers compete in three rounds of Christmas carol themed challenges. Jordin Sparks guest judges.

The bakers compete in three rounds of Christmas decor themed challenges. Abigail Breslin guest judges.

The bakers enter the Land of Sweets to construct "Nutcracker"-inspired whimsy. Guest judge: dancer and actress Jeanine Mason ("Roswell, New Mexico").

Bakers compete in three rounds of holiday baking challenges, Santa's food, reindeer food, and an advent calendar cake. Chris Bosh guest judges.

Bakers compete in three North Pole themed challenges. Sasha Pieterse guest judges.