Place all ingredients except water into the Thermomix bowl and mix 10 seconds/speed 6.
Add water through the hole in the lid as you continue to mix 5 seconds/speed 7.
Remove pastry and bring together on a lightly floured silicone mat.
Wrap and refrigerate for at least 20 minutes before using.
To blind bake, roll out and line pie dish or flan tin of choice. Line with a piece of baking paper and fill with baking beads, rice or beans. Bake approximately 20 minutes with the beads in, at 190°C. Remove the beads and bake a further 10 minutes without them.