Put a small saucepan on medium heat and when hot add the olive oil. Wait a minute to heat up and add the onions. Sauté for 4-5 minutes until soft and translucent.
In a medium bowl add the olives, onion, dry and fresh mint and 1 tablespoon of salt and mix well.
Work on the dough (having added the baking powder, the seed oil, the orange juice and 1 tablespoon of salt, and divide in 8 parts.
Open dough (a bit thick, 2-3 mm. oval about 20 cm length and 10 cm width) for each pie and place in the middle lengthwise the mixture of olives, onions and mint.
Use a baking dish that has been greased with seed oil. Roll each pie, brush them with some seed oil and place in the oven, air circulation, at 160 degrees C for about 45 minutes until nicely browned.