In a large mixing bowl, combine warm water, sugar, and yeast. Let sit for 5–10 minutes until foamy.
Add flour, salt, and olive oil. Mix until a shaggy dough forms.
Turn dough onto a floured surface and knead for about 8 minutes until smooth and elastic.
Place dough in a greased bowl, cover, and let rise for 1 hour or until doubled in size.
Punch down the dough, shape into a loaf, and place on a baking sheet lined with parchment.
Cover and let rise again for 30 minutes.
Preheat oven to 400°F. Using a sharp knife, make 3–4 slashes on top of the loaf.
Bake for 25–30 minutes until golden brown and crusty.
Cool slightly before slicing. Serve warm with butter or olive oil.