Mix the dough: In a large bowl, combine flour, yeast, and salt. Add warm water and olive oil. Stir until a sticky dough forms.
First rise: Cover the bowl with a towel or plastic wrap. Let it rest at room temperature for 1 to 1.5 hours, until doubled in size.
Stretch and fold: Lightly oil your hands. Gently stretch the dough and fold it over itself. Turn the bowl and repeat on all sides. Do this 3–4 times, every 30 minutes.
Shape the dough: Sprinkle flour on your work surface. Carefully turn out the dough. Divide it into two long, flat pieces. Handle gently to keep the air bubbles.
Second rise: Place dough pieces on a floured baking sheet. Cover and let them rest for 30–45 minutes.
Preheat the oven: Preheat your oven to 450°F (230°C). Place a baking stone or tray inside to heat.
Bake the bread: Slide the dough onto the hot surface. Bake for 20–25 minutes, until golden and crisp.
Cool before serving: Allow the ciabatta to rest on a wire rack for a minimum of 30 minutes before cutting into it.