Bayern showed no mercy as Lewandowski sewed up his brace after heading home a corner with ten minutes to the final whistle.

It looked like Bayern had sealed the deal but resilient Hoffenheim reduced the arrears two minutes later through Munas Dabbur, who shrugged off Alaba to slot home past goalkeeper Manuel Neuer.

Bayern wobbled meanwhile Hoffenheim wasted a golden opportunity to make it 4-3 as unmarked Dabbur missed the target by header from promising position in the 87th minute.

Dabbur cut a better figure in front of the target moments later as he poked home a rebound that dropped off the left post in the injury time.

Hoffenheim pressed frenetically but Bayern were able to hold firm and to book their berth for the next round.

Elsewhere, fourth-division team FC Saarbrucken upset second division club Karlsruher SC 5-3 on penalties.

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