Place warm water, yeast, and brown sugar in a mixing bowl. Stir and let stand for a few minutes until it starts to bubble and foam a bit.
Add olive oil and salt. Mix and add the flour gradually. You want to add enough that the dough comes away from the sides of the bowl. You want to mix it with the dough hook for a few minutes.
Cover and let the dough rise until doubled for about 30 minutes.
Punch down dough and divide in two and form into two loaves.
Cover with a damp cloth and let rise until doubled.
Preheat oven to 375 degrees.
Beat together 1 egg and 1 Tablespoon water. Brush the risen loaves with the egg mixture.
Make a single long quick cut down the center of the loaves with a sharp knife.
Place at least 1 cup hot water in a shallow pan on the rack underneath the bread to create steam while baking, ensuring a perfectly crunchy crust.
Bake for 25-30 minutes or until the loaves turn golden brown and sound hollow when tapped.
Remove from pan and let cool on racks. Rub butter over the crust before serving.
