Erik ten Hag's side failed to spark at The City Ground and, after a flat first half, fell behind to a strike by Nicolas Dominguez. Marcus Rashford levelled with his third goal of the season, from an Alejandro Garnacho pass, which threatened to provide a platform for the visitors, but it was not to be.
Breaking after a Christian Eriksen drive was saved by Matt Turner, Forest scored a carbon copy of their opener with Morgan Gibbs-White this time making the most of being afforded far too much space by stroking past Andre Onana.
Despite over 10 minutes of stoppage time being played, there was no way through again as we suffered our first defeat at the ground since 1992.