Preheat oven to 200 c / 390 F. Line a large baking tray with baking paper.
Cut in half each zucchini lengthwise and scrape out inside of each half (zucchini pulp) using a spoon. Chop the zucchini pulp and transfer to a bowl.
In a a large pot boil salted water and when the water is boiling, add the zucchini halves. Let them cook for about 7-8 min. Remove them from the water and place gently to the baking tray. Sprinkle them with a pinch of salt and set aside.