It's the last chance to get into the finale, and host Scott Conant challenges the four remaining bakers to make miniature versions of two pastry classics. In the Master Challenge, they each create a tall dessert of their choosing with at least 12 sol... (more)id layers and sesame as the featured flavor. Pastry chef Nancy Silverton joins judges Jason Smith and Marcela Valladolid to decide which three bakers move on to the finale.