Bayern Munich's Thomas Müller scored twice on his 400th Bundesliga start and Harry Kane bagged his 33rd league goal of the season in a 5-1 victory at Union Berlin on Saturday.

Leon Goretzka and 18-year-old Mathys Tel were also on target as coach Thomas Tuchel capped a successful week with a Champions League semifinal place and a comfortable win on the road.

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Second-placed Bayern ceded the title to Bayer Leverkusen last week but have moved to 66 points from 30 matches, three points clear of VfB Stuttgart who visit Werder Bremen on Sunday.

"We're pleased. It has been a perfect week for us," Tuchel said. "Coming here and winning like this certainly wasn't a given, so well done to the lads. It was a team performance in a tough game."

Bayern led on the half-hour when Tel's pass into the box was left by Müller and Goretzka thumped in a shot off the underside of the bar against relegation-threatened Union.

Kane scored the second with a 30-metre free-kick and it was more of the same in the second half as Eric Maxim Choupo-Moting's cross was rifled into the net by Müller.

Teenager Tel finished from Kane's pass just past the hour mark before a rampant Bayern added a fifth through Müller. Yorbe Vertessen scored a late consolation for the home side who are three points above the relegation playoff spot.

RB Leipzig moved three points clear in the fourth Champions League qualifying place with a 2-1 win at Heidenheim, though they have played a game more than fifth-placed Borussia Dortmund, who host champions Leverkusen on Sunday.

Lois Openda's 23rd goal of the campaign five minutes from the end secured the win for Leipzig.

Bottom side Darmstadt ended a 22-game winless streak as they secured a 2-0 away victory at second-bottom Cologne.

Christoph Klarer and Oscar Vilhelmsson scored second half goals to leave Darmstadt nine points off the relegation playoff position with four games left.

Jonas Wind's first Bundesliga goal since November secured a 1-0 victory for Wolfsburg over Bochum to move his side five points clear of the relegation playoff spot.

Robin Hack got a hat trick for Borussia Monchengladbach but still ended up on the losing side as Hoffenheim edged a seven-goal thriller 4-3 after Anton Stach scored an added-time winner.