Preheat the oven to 350 degrees Fahrenheit (175 degrees Celsius).
Mix the olive oil and the thyme in a small bowl. Set aside.
Sift the wholegrain spelt flour and place into a mixer bowl.
Add the oat flour and salt. Mix well.
Make a well in the middle. Add the olive oil & thyme. On a low speed, start mixing the dough with a flat beater attachment while gradually adding the water to create a soft dough.
If the dough is not pliable, gradually add a small amount of water or sifted flour until you have a dough that you can roll out.
Form a ball from the dough and place it between 2 baking sheets.
Flatten the dough with a rolling pin trying to keep a circular shape. The dough should be thin.
Carefully peel away the top baking sheet.
Put the pie pan facedown onto the dough and holding the baking sheet with the dough, turn it over onto the surface of the pie dish.
Peel away the baking sheet.
Smooth the dough with a small rolling pin, or with your hand. Cover the inner sides of the dish with dough, smoothing it out in the process.
If areas are missing, you can roll out more dough to use as fillers. Smooth it out with a small rolling pin or with your hand.
Perforate the dough with small holes using a fork.
Bake for 12 minutes. Let cool.