Robben and Rafinha want more from Bayern
Quickfire second-half goals from Javi Martinez and Robert Lewandowski moved Bayern on to seven points at the halfway stage in Group E.
But Niko Kovac's men laboured against a deep-lying defence for the opening hour, with Robben one of the creative talents who failed to fire.
"We played well in the first half, but we didn't take advantage of the few chances we had and the final pass wasn't always there," he told Sky.
"In the second half, we had a few moments where we didn't play too well, but we didn't ease off and eventually we took our chances."
3 points in the bag Well done, boys! ⚪#UCL #AEKFCB 0-2 pic.twitter.com/ddxrzu3kSG— FC Bayern English (@FCBayernEN) October 23, 2018
Left-back Rafinha set up striker Lewandowski for the 63rd-minute tap-in that sealed the points.
"It was difficult. We started well but it was tricky to control the ball," the defender told reporters.
"Thankfully, we managed to score the goals. We know we need to play better, but we're heading in the right direction."
Bayern returned from the international break on a run of four games without a win, leading to Kovac's position coming under scrutiny.
But Tuesday's triumph follows a 3-1 Bundesliga victory at Wolfsburg, with a visit to Mainz next on the agenda in Germany's top flight.