The Villa legend tweets his congratulations to the 23-year-old midfielder.
The 23-year-old netted a long-range beauty on the 28-minute mark at the KC Stadium as Forest - under the guidance of Paul Williams following Dougie Freedman's sacking - looked on course for a big win in a difficult week.
However, Sone Aluko climbed off the bench to snatch an equaliser with 17 minutes to go, but Gardner's strike remained the big talking point in the contest.
It was only the midfielder's first goal in 11 months, but he has given a stellar account of himself since leaving his parent club, and Villa legend Ian Taylor was quick to congratulate him over the strike.
With the Villans looking like relegation certainties, it remains to be seen if it is in Gardner's best interests to return this summer, given that Forest and Villa could be in the Championship next season.
Remi Garde's side sit rock bottom of the Premier League, nine points adrift of 17th-placed Sunderland, having played one game more.