The powerful and cohesive England Roses had too much muscle for the world champions, avenging their dramatic 34-31 loss to the Black Ferns in the final of the global tournament - also in Auckland - when their record 30-match winning streak ended.
A robust English pack ensured there would be no repeat, dominating the world champions up front and scoring all five of their tries through forwards barging over from close range.
New Zealand's attacking style was stifled for much of the contest, aside from the middle period, when they created tries to Kennedy Simon and Katelyn Vaha'akolo on either side of the interval.
England established early control through tries to Alex Matthews, Lark Atkin-Davies and Sarah Bern inside the first 23 minutes.
A 19-0 lead was reduced to 19-12 before Morwenna Talling and Zoe Aldcroft crossed to make the outcome safe.
England captain Marlie Packer, who was named world women's 15-a-side player of the year during the prizegiving ceremony, said her team had progressed throughout the tournament.
"Every game, we grew as a group and I'm just super proud of that performance," dynamic flanker Packer said.
"Beating New Zealand in their own backyard, there's no better feeling and they put on a fantastic game for us tonight.
"We just want to keep growing and keep inspiring future rugby players."
World number one England were the only team to go unbeaten through the first edition of the top-tier WXV1 tournament in New Zealand, comprising the world's six leading nations.
England won all three of their matches in comfortable style, including defeats of Australia and Canada, who both won their two other games to share second place.
Second-ranked New Zealand placed fourth, after losing their opener against France.
The French lost their last two games - including an upset 29-20 defeat against Canada on Saturday - to be fifth while winless Wales were sixth.
Captain Packer named Player of the Year
England captain Marlie Packer was named World Rugby women's 15s Player of the Year, moments after they beat New Zealand in the final of the inaugural WXV 1 competition in Auckland on Saturday. Packer has been a force to reckon with in the back row and she was the leading try-scorer in women's test rugby this year with 11.
She led England to their fifth straight women's Six Nations title earlier this year with a Grand Slam while she was also one of the highest try scorers at the World Cup late last year when they finished runners-up.
"This is the biggest ever year of women's international test matches and a dawn of a new era on the road to an expanded Women's Rugby World Cup in 2025," World Rugby chairman Bill Beaumont said.
"We have witnessed huge performances during Six Nations, Pacific Four Series and most recently, WXV where the best of the best have shone on the biggest stage. All our nominees have taken the game by storm this year."
New Zealand Katelyn Vahaakolo was crowned the women's Breakthrough Player of the Year after she made the switch from rugby league to rugby union last year.
Her compatriot Tyla Nathan-Wong received the women's Sevens Player of the Year award while Italy's Sofia Stefan earned the Try of the Year which was decided by a fan vote on social media.
