Bakers who first met online attempt to re-create popular dessert trends and serve up the next big thing. Guest judge: "Candy Queen" Jackie Sorkin.
An illuminating theme -- light -- ignites the bakers' creativity in the kitchen. Guest judge: actor Irene Choi ("Insatiable").
A family theme stirs fond memories for tight-knit bakers who are brothers and sisters, mothers and sons and more. Guest judge: chef Carla Hall.
As time ticks down on three chocolate-themed rounds, the bakers try not to lose their tempers. Guest judge: chocolatier Jacques Torres ("Nailed It!").
Married bakers who live and work together say "I do" to delicious sweets. Guest judges: husband-and-wife TV hosts Nick and Vanessa Lachey.
The bakers bring their A-game in a trio of inventive, science-inspired rounds. Guest judge: actor Paris Berelc ("Alexa & Katie").
The teams work to wow the judges with confections that bring the element of surprise. Guest judge: chef and baker Nancy Silverton.
The teams wax nostalgic with extra-sweet treats inspired by popular candies. Guest judge: gourmet chocolatier Jonathan Grahm.
The bakers rush to make winning desserts inspired by the judges' favorite holidays. Guest judge: cake designer and pastry chef Thiago Silva.
An ocean theme sends bakers into the deep to make seascapes, aquatic creatures and salty-sweet flavors. Guest judge: chef/restaurateur Richard Blais.
Geeky science-themed challenges get the creative juices flowing -- along with oozy zombie "blood." Guest judge: actor/sci-fi lover Colin Hanks.
The contestants serve up sweets with summery flavors that evoke the great outdoors. Guest judge: "Wet Hot American Summer" creator Michael Showalter.
Fashion-forward challenges force the frazzled contestants to think outside the box. Guest judge: clothing designer Betsey Johnson.
The baking teams pour buzz-worthy ingredients like coffee, honey and alcohol into amazing edible creations. Guest judge: pastry chef Mindy Segal.