Anthony Stokes looked to have put the Hoops on course for a 21st consecutive win in domestic competitions when he rounded Jason Brown and slotted the ball home from an acute angle after 28 minutes.
Celtic had not conceded in their previous six matches, but Aberdeen levelled when Gavin Rae's shot took a wicked deflection off Celtic debutant Andre Blackman and flew past Fraser Forster a minute before the break.
Source: PA
Source: PA