Woerner last started a World Cup event Switzerland in March, finishing ninth, however she settled back into the routine with apparent ease at the sixth round of the season.
The 23-year-old German beat World Cup regulars Kelsey Serwa of Canada and France's Ophelie David in the big final as well as another home skier in Alizee Baron to take victory.
Woerner beat Serwa, Ophelie and Baron into second, third and fourth respectively and goes straight in at 17th in the overall ski-cross World Cup rankings with 100 points.
Swiss skier Fanny Smith finished outside the points in 35th after a poor qualification in Megeve but still leads overall with Serwa 95 behind in second and David a further 30 back in third.
Meanwhile in the men's event American John Teller also claimed his first World Cup win of the season and first on the tour for over two years.
Last victorious in Austria in January of 2011; Teller beat Jouni Pellinen into first place in France while Armin Niederer was third ahead of Russian Egor Korotkov.
World Cup leader Alex Fiva was sixth with his lead at the top of the overall standings now 11 points from fellow Swiss skier Niederer with eight rounds to go this season.
- Sports & Recreation
- Kelsey Serwa
- Ophelie David