Beer was one of the judges on The Great Australian Bake Off alongside Matt Moran until 2022 and is also a regular guest on MasterChef Australia.

[2] Her father's ancestors lived in Hill End located in regional New South Wales and were gold miners.

[2] Beer did not complete her high school education, instead choosing to leave school to help the family at the age of 14 and worked in various jobs, including one as a lift operator in a New Zealand department store and an assistant to a senior geophysicist for BP in Libya before returning to Sydney in 1968.

Later, she became a partner in the Charlick's Feed Store restaurant in Ebenezer Place, located in the Adelaide city centre.

[7] In April 2015, Beer and Matt Moran were announced as the judges of the second season of The Great Australian Bake Off, which aired on LifeStyle Food from 13 October 2015.

The series, Maggie Beer's Big Mission, focuses on improving the food and dining experience in aged care facilities.

[18] In April 2016, Beer was awarded an honorary doctorate from the University of South Australia in recognition of her achievements in tourism and hospitality, and to the promotion of Australian produce and cuisine.

[20] She married Colin Beer on 17 January 1970 and they own a cottage home in the Barossa Valley in South Australia.