Rampant Bayern equalled their record of eight consecutive wins at the start of a season.
Germany forward Mueller opened his account in the 26th minute, latching onto a 50-metre ball from defender Jerome Boateng and he doubled the hosts' lead with a penalty nine minutes later for his eighth league goal.
Pierre-Emerick Aubameyang kept up his remarkable run of scoring in every one of Dortmund's league matches this season as he slotted in from close range a minute later but his team could not stop the charging Bavarians, who had 15 shots on goal in the game.
Irrepressible Bayern forward Lewandowski killed off any hopes of a comeback with two goals early in the second half to take his tally to 12 goals in all competitions in the last 12 days alone and nine in the last three Bundesliga matches, a league record.
Boateng floated over another cross from his own half and Poland captain Lewandowski shook off both Mats Hummels and Sven Bender to score a minute after the restart.
He then slotted in 12 minutes later for his 12th league goal in the first eight matchdays, equalling the Bundesliga record set by Christian Mueller in 1964/65 and Gerd Mueller in 1968/69.