An opener from Julian Schieber plus late strikes from Robert Mak and Almog Cohen gave Dieter Hecking's side a healthy-looking result which moved them into the top six.
It was certainly a game of two halves at the Frankenstadion, with the first falling some way short of expectations for the crowd of 41,000.
The only chance of note fell to Nurnberg after 27 minutes, when Cohen received a cross from Javier Pinola before hitting a shot from the centre of the penalty area which fell inches wide.
The home side had another opportunity six minutes after the restart through Jens Hegeler, but he could only turn Christian Eigler's cross over the bar.
An hour had passed before the ball was finally in the back of the net, although Eintracht midfielder Sebastian Rode saw his strike disallowed for offside.
But Nurnberg found themselves in front seven minutes later when Scheiber provided the finishing touch to a free-kick from Mehmet Ekici.
Mak then gave the home side some breathing space with his goal three minutes from time, the substitute beating Eintracht goalkeeper Oka Nikolov with a lovely lob.
And Cohen added some shine to the scoreline in the final minute, powering the ball beyond Nikolov into the corner.