Wearing bib number 7, the Sochi 2014 medallist clocked a time of 1:17.37 on the famed Kandahar slope.
The 16th win of Gut-Behrami's career (the 30th in total) takes her level in third on the all-time women's Super G list, alongside Katja Seizinger(16). Only Renate Goetschl(17), and Lindsey Vonn (28) have more wins.
It also extends her lead in the Super G season rankings, leaving her favourite to claim the discipline's globe with just two races remaining.
"I was able to try to give everything that I had today. For sure when you're confident. even when you're not in top shape, it's easier to let your skis go and somehow is the skis that help you be fast," the 29-year-old told FIS after the race.
First World Cup podium for Vlhova
Slovakia's Vlhova came into the day with a 64 point lead over Gut-Behrami in the overall standings,
Despite not being a speed specialist, her time of 1:17.65 meant she finished second, and on podium for the first time ever in a Super G world cup event.
Third place went to Tamara Tippler of Austria.
Today's race, which was postponed from Sunday due to poor visibility, was the last women's event ahead of the world championships in Cortina, starting on Monday 8 February.
Olympic downhill champion Sofia Goggia didn't compete on Monday, having suffered a knee injury at the German venue over the weekend, which has ruled her out of the 2021 ski world championships, starting on Monday 8 February in Cortina d'Ampezzo.
Tessa Worley of France had another strong run. The four-time world champion finished eighth and features in our original series Cirque Blanc, which is following the French women's team throughout this season, giving exclusive behind-the-scenes insight ahead of the Beijing 2022 Winter Olympics.