Robert Lewandowski also scored twice and Thiago Alcantara rounded off a stunning team goal in the comfortable win
BAYERN MUNICH'S quest for the treble is alive and kicking after Thomas Muller's hat-trick helped fire them into the DFB-Pokal final.
Jupp Heynckes' side have already sealed the Bundesliga title and take on Real Madrid in their Champions League semi-final next week.
The German giants were simply sensational against Leverkusen who arrived at the game in dangerous form.
Bayern Munich needed just three minutes to take the lead when Javi Martinez's strike flew through Robert Lewandowski's legs with the Poland striker getting the deftest touch.
Six minutes later and the home side's task was even greater when Lewandowski fired home Franck Ribery's cross with pinpoint accuracy to grab his second.
With the game already in danger of getting away from Leverkusen, they fired back with 16 minutes on the clock when Lars Bender headed past Sven Ulreich to reduce the deficit to one.
Leverkusen squandered opportunities to equalise and they were made to pay when Thomas Muller sparked a goal 12-minute goal frenzy.
The Germany international latched onto Thiago Alcantara's wonderful past to restore their two-goal lead in the 52nd minute.
Thiago then scored a wonderful team goal to put the game to bed eight minutes later before Arjen Robben's strike on goal hit Muller on the way in before finding the net.
Leon Bailey showed why he is so highly-rated when he curled in a sensational free-kick for a consolation goal.
Muller then bagged his hat-trick when he produced a wonderful swivel in the box to fire past Bernd Leno.
