In the meantime, prepare the filling. Chop tomatoes, basil, oregano, salt and olive oil in a blender.
Pour it into a pan, bring it to boil and simmer it for half an hour while stirring occasionally.
Cut the square into 4 equal strips and put them on top of each other. This may be trickier as it sounds if the dough sticks to the counter. Use a plastic scraper to help getting the dough off the worktop if it’s necessary. The dough is quite soft so try not to pull it more than necessary.
When they are evenly on top of each other cut them into as wide rectangles as the bread tin.
Spread the rest of the tomato sauce on top evenly.
After 15 minutes sprinkle the cheese on top of the bread.