Five former Christmas Cookie Challenge champions return to the workshop for another round of competition, and hosts Ree Drummond and Eddie Jackson have devised their toughest cookie tasks for the occasion. First, the cookie makers have to create an entire Christmas village puzzle out of six perfectly interlocking cookies. Then they craft the tallest cookie displays ever seen, making massive Christmas mantels complete with realistic fireplaces. The heat is on as they infuse their cookies with warm spices like coriander, cloves, chile powder and paprika, but only one champion will win for the second time and claim the "Best of the Best" title.