Preheat oven to 180°C. Butter a 23 cm pie plate.
Prep the base.
Press into pie plate and blind bake for 15-20 minutes until golden and fragrant. Cool.
Place gelatin into a bowl with water to cover.
Place zest and sugar into the Thermomix bowl and mill 10 sec/speed 10. Add juice, yoghurt and vanilla and blend 5 sec/speed 5. Scrape down sides of bowl.
Add gelatin to the Thermomix bowl and blend 20 sec/speed 6. Remove from bowl and set aside.
Place cream into bowl. Whip 20–30 sec/Butterfly/speed 4 until very soft peaks form. Remove Butterfly.
Add lime mixture to cream and blend 10 sec/speed 7.
Pour into cold biscuit base and allow to set for at least 4 hours. Garnish with lime slices and serve.