In Season 33 in Episode 4025, she appeared with Cookie in a Letter of the Day skit about the letter B, where she was performed by Matt Vogel. Though brought in to make sure Cookie fulfills his "important educational job," she has the same appetites as her progeny, and mother and son give in to temptation simultaneously.
Two seasons later in Episode 4059, as performed by Kevin Clash, she was featured in the song "The First Time Me Eat Cookie," innocently introducing her infant son to the baked good that would become his life's obsession.
She appears in Episode 4618 performed by Stephanie D'Abruzzo, cameos in "Try a Little Kindness" performed by Matt Vogel, and appears in a 2017 Chrysler commercial. She also appears as one of the gift-bringers in 2018's "12 Days of Christmas Cookies," performed by Ryan Dillon.
She is later heard in a web video for the Sesame Street's Caring for Each Other initiative, in which Cookie Monster talks about the Fruit Snack Challenge.
- AOL.com You've Got Cookie Monster's Mother's Day Message