Actress Alyson Hannigan is set to return to CBS.

On Friday, CBS announced that they would be bringing the How I Met Your Mother Actress on for a guest appearance on their freshman comedy The McCarthys, according to Entertainment Weekly.

Hannigan will appear in the show’s Christmas episode, which is set to premiere on Thursday, December 18, as Pam, Marjorie (Laurie Metcalf) and Arthur’s (Jack McGee) upstairs tenant. Pam is suffering from a recent break up and is invited by Marjorie and Arthur to join them for their Christmas festivities.

Aside from her role as Lily Aldrin in How I Met Your Mother, Hannigan is also known for her character Willow in the television series Buffy the Vampire Slayer. Her film credits include American Pie, American Pie 2, American Wedding, and Date Movie.

Just In: Alyson Hannigan is returning to CBS for a guest appearance on 'The McCarthys': http://t.co/UU2AIQsUdN pic.twitter.com/ly5Bw4Yb7a

— Entertainment Weekly (@EW) November 14, 2014

The McCarthys is produced by Sony Pictures Television in association with Gluck’s Olive Bridge, and airs on Thursdays at 8:30 p.m. on CBS.