Pre-heat the oven to 200 C / 400 F. Line a baking sheet with baking paper.
Add the flour, sugar and butter to the Thermomix bowl. Mix for 5 seconds / speed 8.
Add the buttermilk and vanilla extract. Mix for 20 seconds / speed 5.
Knead using the DOUGH function / 20 seconds.
Turn onto a floured surface and use your hands to bring the dough together. Shape into a circle around 1 inch deep.
Use a 6-7cm cookie cutter to cut out shapes in the dough and transfer to the baking tray. You should be able to get 4 or 5 scones from the first go.
Bring the remaining dough together with your hands, lightly knead and reshape into a 1 inch thick circle. Cut out more shapes and transfer to the baking tray. Repeat until you have used all the dough. You should get 8 scones.
Place in the pre-heated oven and bake for 12-15 minutes, until they are golden brown.
Transfer to a wire rack and allow to cool before serving, or even better serve while still warm.