Giada De Laurentiis challenges the three final chefs to make a dish that represents the person they're most thankful for, and they each have to incorporate a different type of squash. The chef who most impresses judges Alex Guarnaschelli, Carla Hall and Christian Petroni wins a critical advantage for the dinner round, when the chefs have to make the ultimate Thanksgiving feast. The final three chefs battle through hours of cooking until the best walks away with $25,000 and the title of Ultimate Thanksgiving Challenge Champion.

• Giada De Laurentiis