n a large mixing bowl, combine the warm water, sugar, and active dry yeast. Stir gently and let it sit for about 5 minutes until the mixture becomes frothy. This step ensures that the yeast is active and ready to help the dough rise.
Add the olive oil, salt, and 2 cups of flour to the yeast mixture. Stir until well combined. Gradually add the remaining 2 cups of flour, one cup at a time, mixing until a sticky dough forms.
Transfer the dough onto a floured surface and knead it for about 8-10 minutes. The dough should be smooth and elastic. If the dough is too sticky, add a little more flour, but be careful not to add too much, as it can make the bread dense.
Lightly oil the mixing bowl and place the dough back into the bowl, turning it once to coat with oil. Cover the bowl with a kitchen towel and let the dough rise in a warm, draft-free area for about 1 ½ to 2 hours, or until it has doubled in size.
Once the dough has risen, punch it down to release the air. Transfer it to a floured surface and shape it into a long, oval loaf. If you prefer a round loaf, you can shape it into a ball instead.
Place the shaped dough on a baking sheet lined with parchment paper and lightly dusted with cornmeal. Cover it with a kitchen towel and let it rise again for about 30 minutes.
While the dough is rising, preheat your oven to 400°F (200°C). Place an empty baking dish or pan on the lower rack of the oven. This will be used to create steam, which helps achieve a crisp crust.
Before placing the dough in the oven, make 3-4 diagonal slashes on the top of the loaf with a sharp knife. This helps the bread expand properly as it bakes.
Place the baking sheet on the middle rack of the oven. Pour a cup of hot water into the empty baking dish on the lower rack to create steam, then quickly close the oven door. Bake the bread for 25-30 minutes, or until the crust is golden brown and the loaf sounds hollow when tapped on the bottom.
Once baked, remove the bread from the oven and let it cool on a wire rack for at least 15 minutes before slicing. Enjoy your homemade Italian bread with butter, olive oil, or as a side to your favorite Italian dishes.