It was the 20-year-old Olympic champion’s fourth win in as many slalom races this season and her 19th World Cup win overall.
Shiffrin, who claimed the last three slalom crystal globes, won by a massive 2.36sec over the two runs, with Switzerland’s Wendy Holdener second and home skier Veronika Velez Zuzulova third.
“It reminds me of Aspen quite a bit. I had a really good weekend there in the slaloms and it’s nice to kind of bring that skiing back today,” said Shiffrin, who won the first two slaloms of the season by big margins at the American resort before hurting her right knee at Are, Sweden in December.
“My timing felt better and better throughout the day but it wasn’t easy. It was a long course and I was really tired at the end of the second run, but I’m really happy.”
Despite finishing down in 10th place, Sweden’s Frida Hansdotter nevertheless ensured the World Cup slalom title.
Switzerland’s Lara Gut crashed out on the first run and will have to wait until Monday’s giant slalom to be able to overtake injured American Lindsey Vonn atop the overall World Cup standings.