Mix flour, yeast, oregano, sugar, salt, olive oil and water in a bowl. Knead until dough is soft (at least 5 minutes). Cover with a warm, moist towel and put in a warm place until dough has doubled in size (about an hour).
Spread dough on a baking (cookie) tray, pressing lightly so that it is flat and even.
Oil dough. Make little cavities throughout dough by pressing down with your fingers. Place olives and rosemary in cavities.