Plus, Kinsey reveals what ‘Office’ Easter egg to look out for in the Hallmark movie.

Its a holly jolly Dunder Mifflin reunion inAngela Kinseys upcoming Hallmark holiday film,Confessions of a Christmas Letter.

Kinsey reunites with herThe Officecostar and good palBrian Baumgartnerin the festive feature from director Heather Hawthorn Doyle.

Confessions of a Christmas Letter - Brian Baumgartner and Angela Kinsey

Brian Baumgartner and Angela Kinsey in ‘Confessions of a Christmas Letter’.Hallmark

Needs better prose, Settie.

Kinsey tells EW that she and Baumgartner picked up right where we left off for the mini-reunion.

“To spend the day together was just really special.

Confessions of a Christmas Letter - Angela Kinsey

Angela Kinsey in ‘Confessions of a Christmas Letter’.Allister Foster/Hallmark

It was the production crew that proposed the reunion in the first place, says Kinsey.

And I said, That would be great.

And I know just who to play it.

We had the best time.

It was so fun to reunite and act together like that.

Allister Foster/Hallmark

And, yes, expect some subtleOfficeEaster eggs in the film.

So there’s a cat cookie jar, little cat figurines.

That was a little nod to myOfficecharacter.

Kinsey hopes the feature brings holiday cheer this season.

I just thought it was a relatable storyline, she says.

Through the movie, my character learns to just let go of that.

I thought that was really relatable and important.

It’s just a fun, sweet movie.

Confessions of a Christmas Letterpremieres Sunday, Nov. 17, on Hallmark.