Shiffrin claims 78th World Cup win, closes on record
Shiffrin clocked a combined time of two minutes 7.18 seconds to beat Slovakia's Petra Vlhova by 0.13 and Italian Marta Bassino by 0.31.
"It's always nerve-racking," Shiffrin said. "You hope that you're in the right shape, and you can bring the right intensity from the start, and I felt really good today.
"So it's just pushing, the second one was a little bit wild sometimes, but I felt like skis were running and I really enjoy racing here."
Shiffrin's last win in the discipline came just over a year ago, in Courchevel, France in the build-up to the Beijing Olympics.
The 27-year-old has racked up four wins this season and leads the overall World Cup standings by 205 points from Italy's Sofia Goggia.