McKellar first appeared on the small screen as Winnie Cooper in the ABC program The Wonder Years, which ran from 1988-1993. After finishing the series, she went on to study mathematics at UCLA.

In her work as an undergraduate, she helped author a mathematical-physics theorem, the Chayes-McKellar-Winn theorem. She has written 11 books about math and runs a website devoted to the subject.

She continued her acting career as well, making guest appearances on The West Wing and the The Big Bang Theory. Over the years, she has appeared in the Hallmark romcoms Crown for Christmas (2015), Christmas at Grand Valley (2018), and Christmas at Dollywood (2019). She also starred in Crown Media’s Matchmaker Mysteries series.

In an interview with the Wall Street Journal, the actress said she was excited when Bill Abbott approached her about working for GAC Family.

“So when he was getting ready to launch this new network, I was thrilled that he reached out to me to sign a multi-picture deal as an actress and executive producer,” she said.

McKellar said she having a lot of fun in her new role at GAC Family.

“I’m executive producing and acting in these movies, and I have a little bit more creative say,” she said. “And so, it was really fun to be more hands-on and helping to make more creative decisions, not just in the script, but also just random things, like the props or whatever, just being more involved.”