But the Cashmere defence isn't easily penetrated. Butler's effort was the first goal Cashmere had conceded in their entire cup run and their ability to stifle Turner and danger man Roy Krishna proved the difference.
It rounds out a season of unprecedented success for Cashmere in which they won the Mainland League, South Island Championship and Hurley Challenge Shield.
Canterbury veteran Andy Pitman, who ends his career with a Chatham Cup winners medal around his neck and the Jack Batty trophy for his man of the match performance, was understandably emotional as the champagne flowed.
"They don't come better than this to be honest," he said after the match.
"What a huge crowd. We've got the win, the girls won before us, my partner's pregnant. The world couldn't be any better at the moment."
Pitman credited a higher level of intensity at the start for setting up the win.
"We probably didn't play as well as we could but it's about winning.
"Our first half performance meant they really just didn't know what to do with us because we were on to them from the very off. I think intensity of the occasion was a bit of a shock for a few of their boys and after that it was ours to lose."
In the women's final, the Coastal Spirit beat Glenfield Rovers 1-nil courtesy of an own goal three minutes into stoppage time.