Combine bread flour, yeast, salt, and sugar in a bowl and mix.
Add water and olive oil, then knead the dough.
Let the dough rise for 1 hour.
Spread the dough evenly in a pan and let it rise for another 20 minutes.
Brush the surface of the dough with olive oil and make dimples with your fingers.
Sprinkle rosemary and coarse salt on top.
Bake in a preheated oven at 180°C (356°F) for 20 minutes.