Pour the flour and salt into the mixer bowl and mix;
After that, pour in the water with the yeast, add the oil, and knead (but you can also do it by hand) until you obtain a rather soft and homogeneous dough;
Let the dough rise in a bowl covered with a damp cloth, for at least 3 hours;
Wash the escarole, cut it into strips and blanch it in water for a few minutes. Remove the escarole with a slotted spoon and drain well;
Take a pan, pour in a drizzle of oil and add the garlic clove;
Add the boiled escarole
Remove the garlic and add the anchovies, cooking them until they fall apart;
Also add the sultanas (which we soaked in cold water and squeezed);
Add the pine nuts, olives, salt, pepper and cook for 15 minutes, then drain the excess water;
Divide the dough in half, roll out the first piece of dough with a rolling pin and cover the base of a baking tray greased with oil and fill with the escarole, cover with the other piece of dough also rolled out, sealing the edges well;
Brush the surface with oil and cook in a static oven (already hot) for about 45 minutes at 180 degrees;
Remove from the oven when the surface seems golden brown, cover with a cotton cloth, leave to rest for 15 minutes and then serve;