For the crust
270 g semi-whole wheat flour
40 g manitoba flour
half a teaspoon whole sea salt
120 ml extra virgin olive oil
100-120 ml filtered water
For the filling (quantities are enough for a 20-22 cm pie)
170-180 g red onions, cleaned and chopped
3 tablespoons extra virgin olive oil
2 zucchini, cleaned and cut into cubes
whole sea salt, just enough to taste
100 ml filtered water
a handful of capers, soaked in filtered water for about 20 minutes then rinsed and drained
a handful of shelled pine nuts
dried mint leaves, to taste
To make the crust, chill wheat and manitoba flour, olive oil and water, by placing them in the fridge at least 30 minutes before you start making the dough. Stir the flours and salt together in a large bowl, then add the olive oil to the dry ingredients and mix with a fork until the oil has been absorbed by the flour. Keep mixing with the fork, as your hands would be too warm, then add the water little by little, just enough to make a good grainy texture. You might not need all the water indicated in the recipe, and that’s ok, as long as the dough holds together. Cover the dough with a damp cloth and transfer it in the refrigerator for about 1 hour. Preheat the oven to 180° C.
In a pan, sauté the onions in the olive oil for a few minutes over a medium heat. Add the zucchini, salt and water, turn down the heat and keep cooking until the onions are soft and the liquid has reduced. Stir in the capers and pine nuts, add the mint and cook for another couple of minutes. Remove from the heat and set aside.
Take some of the dough out of the fridge and place it on a lightly floured surface, dust your rolling-pin with flour, roll the dough out to the desired thickness (2-4 mm). Oil the tart pan and sprinkle it with a light coating of flour. Arrange the dough in the pan, poke a few holes in the dough with a fork to let the steam escape and cover with the vegetable filling. Bake for 25-30 minutes then remove from the oven, let cool for a few minutes, unmold and serve.