Margaret Colin, who portrays Tom Selleck's character's girlfriend in Trois hommes et un bébé (1987), also stars in this similarly titled movie as Barbara Brenner, mother of the three wise men.
Co-writers Paul Campbell and Kimberley Sustad both appear in the movie, Campbell starring as Stephan, one of the three men, and Sustad in the small role as the ER doctor. They have starred together in other made for Hallmark Channel movies, Noël, mon boss & moi (2020), 4 mariages et un coup de foudre (2020), and Noël, Romance et Coïncidences (2018).
The doctor makes the statement that "you can't write these things". The doctor is played by Kimberley Sustad, who co-wrote the script with Paul Campbell, who played Stephan.
When Paul Campbell's character first meets the baby, he says, "Well isn't this shaping up to be an unexpected Christmas." Just as with this film, Le Noël surprise d'Emily (2021) was written by Campbell and co-stars Tyler Hynes with a walk-on appearance by Andrew W. Walker.
As an homage to Trois hommes et un bébé (1987), the three brothers re-create that film's "tossing the baby bottle" scene.