The royal couple Kate Middleton and Prince William are teaming up with former “Great British Baking Show” judge Mary Berry for one big Christmas special that will air on Dec. 16 on BBC One. 

The special will be called “A Berry Royal Christmas” and will feature the three of them making Christmas food for charities dedicated to helping others during the holiday season. One of the featured charities is Passage Charity, which is the UK’s largest resource center for homeless and has helped over 130,000 people in crisis. 

Action on Addiction will also be highlighted during this holiday event. They dedicate themselves to helping those who suffer from substance abuse to recover. They established a dry bar for those who need a “safe space” during recovery. Middleton recently visited to talk with those who were behind this establishment. 

The announcement first came from the official Instagram account of the Duke and Duchess of Cambridge, stating, “The Duke and Duchess of Cambridge have joined forces with cookery legend Mary Berry to prepare festive food to thank all those working and volunteering over the Christmas period.”

The Instagram post mentions that Berry, 84, will join the Duchess behind the scenes at the RHS Garden Wisley, where Middleton herself helped design a garden. 

The event will end with a party, that will be hosted by the trio, along with “The Great British Baking Show” winner Nadiya Hussain. The party portion of Berry’s Christmas special is meant to personally “thank and acknowledge staff and volunteers” who dedicate their time to helping others.

It has not been announced if the special will air in the U.S.