The Scottish champions came back from a goal down to salvage a Scottish Cup replay against United in a game that saw almost everything you could possibly see on a football pitch.
But Johansen admits Celtic could have done much better at Tannadice had they taken more of the chances they created against Dundee United.
“It was a weird game, with two red cards in the first half, but we fought our way back into the game. It was just one of those games where we couldn’t score, despite creating a lot of chances," he said.
“The pitch was bad but I don’t want to use that as an excuse and we still created a lot of chances on it, so it was only about not taking our opportunities."
Meanwhile, striker Leigh Griffiths - who was more involved than most - took to Twitter after a rollercoaster game for himself and Celtic as a whole.
Griffiths missed a penalty for the Bhoys but made amends by netting Celtic's equaliser later on in the second half.
And the 24-year-old admits he was gutted to miss from the spot but is also relieved he was able to redeem himself.
GUTTED about the penalty miss, so glad I managed to redeem myself. Still in the cup. Final on Sunday now.— leigh griffiths (@Leighgriff09) March 8, 2015
As well as Celtic's Scottish Cup replay with Dundee United, the Bhoys will also be facing United in next Sunday's Scottish League Cup final. They'd better get used to the sight of them...