The reigning European and recently-crowned Bundesliga champions are into the final four of Europe's premier club competition for the fourth time in five years as they chase a sixth title.
Last week's 1-1 draw at Old Trafford had David Moyes' United in with a strong chance of pulling off a shock in Munich and despite a temporary scare, Pep Guardiola's side got the job done to secure a 4-2 aggregate triumph.
However, less than a minute later and Bayern were back on level terms courtesy of Mario Mandzukic who got on the end of Franck Ribery's cross to head past David De Gea making it 1-1 on the night and 2-2 on aggregate.
Bayern decided to take it up a gear and it paid dividends as they edged ahead with just over 20 minutes remaining when Arjen Robben produced an inviting ball across the box for Thomas Muller to slot home.
Then the home side produced the killer blow in the 76th minute thanks to Robben who whizzed past Evra and Nemanja Vidic before slotting into the corner to send Bayern into yet another semi-final.
2013/14 UEFA Champions League - quarter-final second leg
*Bayern wins 4-2 on aggregate
Allianz Arena, Munich, Germany - 67,300
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