Despite an unbeaten start to their title defence, the Bavarian giants had come in for criticism in recent weeks for not being able to replicate the same level of incisiveness in front of goal as last season.
However, a brace apiece for Robert Lewandowski and Arjen Robben wrapped up the win, cementing Bayern's place at the top of the Bundesliga.
He told the club's official website after the game: "We are obviously pleased with the result.
"Hannover was the third or fourth team that played against us with a five-man midfield, which is not easy.
"We scored four goals and it could have been more, but the most important thing is that we are getting better with every game. We play more and run less. That's why I'm happy."
And the Dutchman echoed his manager's comments, praising his side's attacking exploits.
He said: "It was a good game, we played really aggressively forward and they were left with no chance.
"Hannover only wanted to defend, but they couldn't stop us. It's nice to score four goals in front of our fans, and it could have been more."
