Sugar Rush

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").

Sweet and salty snacks yield yummy flavors over a trio of junk food-inspired rounds. Guest judge: comedian Fortune Feimster.

From lofty nests to baking with insects, these avian-themed challenges are for the birds. Guest judge: actor and singer Naya Rivera ("Glee").

Magical cupcakes, edible illusions and levitating cakes? What sorcery is this?! Guest judge: magician Justin Willman ("Magic for Humans").

A darkly delicious blackout theme puts the bakers to the test — and the results are decadent. Guest judge: actor and musician Tyler Posey ("Teen Wolf").

Teams take a tropical vacation with bold agendas and breezy flavors. Guest judge: actor Garcelle Beauvais (“The Real Housewives of Beverly Hills”).

Breakfast-, lunch- and dinner-themed challenges determine which team is the hungriest for victory. Guest judge: celebrity cake designer Ron Ben-Israel.