Preheat your oven 15 minutes beforehand to 220°C. If you are using a baking stone (fireproof stone), preheat the oven with the stone in it at least 40 minutes before baking, to about 270°C.
On a floured work surface (or directly on baking paper), roll out your pastry into a large rectangle (slightly smaller than your baking tray).
Pour the tomato sauce over the dough evenly without covering it all (see picture).
 Spread with a spatula so that the whole dough is covered with a thin layer of tomato sauce.
 Sprinkle the mozzarella, onion and mushrooms among the dough.
Add the pieces of scamorza and some artichoke hearts.
Sprinkle with a little rosemary and thyme and season with pepper.
 Bake for 10-12 minutes, checking after 8 minutes to adjust to your oven and the type of pastry you want (more or less crispy, more or less soft).
If you are using a baking stone, bake for 11 to 15 minutes. Again, check the cooking time, which will vary according to your oven...
Leave to cool for a few minutes and enjoy!