To kick off the season, Valerie Bertinelli and Duff Goldman are going back to the 1970s as they challenge the 12 young competitors to make shag cakes. Each baker must make a cake in their chosen flavor and then decorate it to create a shag texture. Groovy, man!

It's the most anticipated episode of the season -- dessert impostors! Valerie Bertinelli and Duff Goldman challenge the remaining 10 bakers to create desserts that look like sandwiches. Order up!