Spurs appeared to be heading for another early Cup exit but were saved by the England striker's late spot kick after Nathan Dyer had handled the ball inside the box.
Tottenham fought back late on to force a replay in its FA Cup Third Round tie against Leicester City, with substitute Harry Kane's late penalty sealing a 2-2 draw in a hugely entertaining match.
The home side made a flying start to the match, scoring after just eight minutes as Kasper Schmeichel parried a shot into the path of the lurking Christian Eriksen who rifled the rebound into the far corner.