Both Spurs goals were made from Gunners mistakes, as Gareth Bale and Aaron Lennon were allowed to waltz past their markers and slot past a helpless Wojciech Szczesny in the first half.
Early in the second half, Per Mertesacker's header was deflected into the Tottenham net by Bale. However, Arsenal were never able to complete the comeback.
The result pushes Spurs' advantage over fifth-placed Arsenal in the table to seven points, while Chelsea sits between the two clubs in fourth.
It marked the fourth win for Tottenham in the past seven league derbies, one of the club's best stretches in recent memory.
So what can one take away from the big derby win?
Here are five lessons from Sunday's famous Spurs victory.