Hoops boss Neil Lennon, as promised, made nine changes with this week's first leg of their Champion League last-16 tie against Juventus in mind and was rewarded with a convincing display as the champions won 3-1.
Nick Ross gave Caley the lead in the ninth minute only for Kris Commons to level in the 20th minute with the sweetest of left-footed strikes.
Three minutes into the second half debutant Rami Gershon headed Celtic into the lead before Miku grabbed a third in the 82nd minute as the visitors ran out easy winners.
Butcher said: "I would have done the same but I haven't got nine players to put in.
"They have quality players who haven't played for a while and especially with them romping away with the league and a Champions League game coming up, every player at Celtic will be on a high and will want to be part of that success.
"I couldn't do any team talks before the game because I didn't have a clue what they were going to do - and when I got their team I still didn't have a clue.
"It was a good test for our players. I am not disappointed with the way we played, I am disappointed with the result and conceding three goals.
"We have nine matches to go. I am glad we have Celtic out of the way and if we play like that we will win more than we lose."