Thomas Muller felt Bayern Munich's DFB-Pokal final victory over Bayer Leverkusen was a "sad moment" because the game had to take place behind closed doors.

Bayern have been in electric form since top-flight football in Germany resumed after the coronavirus shutdown, storming to an eighth consecutive Bundesliga title before closing out another campaign of domestic dominance with a 4-2 win in Berlin on Saturday.

David Alaba's brilliant free-kick opened the scoring at the Olympiastadion and Serge Gnabry doubled the advantage.

Although Leverkusen improved considerably after the break, Robert Lewandowski scored a brace to move past 50 goals for the campaign and seal glory.

Nevertheless, playing at Germany's most famous stadium without fans led to mixed emotions for Muller.

"It's a bit of a sad moment," he told ARD. "When the fans are missing at a cup final like this, it's not the same.

"We did well for most of the way, but it hurts a little bit too."

Wherever they were watching, once again Bayern supporters had plenty to enjoy from a team revitalised under Hansi Flick, who will now aim to repeat the 2012-13 treble when the Champions League concludes next month.

"We leave the stadium proud that we have achieved this," Flick told Sky. "What the team has achieved in the last few weeks is sensational. The attitude is simply fantastic.

"I am very, very happy. The way the team performs is extraordinary."

There was little doubt over the destination of the trophy after Gnabry drilled home an unerring finish in the 24th minute.

"We are so lucky to have won the double today," he told Sky.

"In the first half we had the game completely under control, we could have scored one or two more goals.

"Then Leverkusen had a lot of counter-attacks, but in the end we won 4-2, and that's the most important thing."

Manuel Neuer is one of the survivors of Bayern's last treble season and the captain is eager to go all the way again.

"We have experienced in the last few weeks how motivated and hungry FC Bayern is," Neuer told Sky.

"What we have achieved is something very special. The attitude was sensational.

"We have a little break now, and then we'll prepare ourselves at the top and of course try to bring in the treble."