Hansi Flick's side secured all three points thanks to a brace from star striker Robert Lewandowski.
There was some controversy in the game, as Leroy Sane, who entered the game as a substitute for Kingsley Coman in the first half, was later taken off, and the German winger headed straight down the tunnel.
✔️ GOOD PERFORMANCE
Thomas Muller: 7.0
Muller, much like the Bayern side, looked sluggish and fatigued at times throughout the game.
Yet the German can still make the difference, and he provided the cross for Lewandowski's first goal of the game just before half-time.
Muller was his usual industrious self, but is clearly in need of the winter break.
❌ BAD PERFORMANCE
Leroy Sane: 6.1
This was not a game that will live long in Leroy Sane's memory.
The former Man City winger came on as a substitute for Coman in the 28th minute, and yet such was his performance that he was later hauled off himself for Jamal Musiala with just over 20 minutes remaining.
Sane stormed down the tunnel, and didn't hang about to see the finish of the game.
Sane had been criticised by Flick in recent weeks over his lack of defensive diligence, this was again evident during his stay on the pitch.
⭐ STAR MAN
Robert Lewandowski: 8.6
A somewhat quiet performance by the Bayern striker's standards, but yet he did manage to get on the scoresheet.
Lewandowski, much like the Bayern side in general, looked fatigued and in need of the winter break.
However he was in the right place at the right time to head home Thomas Muller's cross.
Although it must be said that Lewandowski got extremely fortunate, as Leverkusen's goalkeeper and central defender got in each other's way, leaving the striker with the simple task of heading the ball into an empty goal.