The Great British Bake Off: An Extra Slice (sometimes shortened to An Extra Slice) is a British television after-show to follow the series The Great British Bake Off. Hosted by Jo Brand, the show features three celebrity panelists discussing the after-events of the week.

Originally, the show began airing on BBC Two on 8 August 2014 two days after the premiere episode of the fifth series of the main show, and was filmed at The London Studios. In April 2017, it was announced that the series and Brand would follow The Great British Bake Off to Channel 4 in 2017. The sixth series of The Great British Bake Off: An Extra Slice returned on 30 August 2019 and concluded on 1 November 2019. The eighth series began airing on 24 September and concluded on 26 November 2021. In 2023, The Great British Bake Off: An Extra Slice has been renewed for an eleventh series that began airing on 26 September 2024.