Place a metal broiler pan on the lowest shelf in the oven. Place a baking stone on the center rack in the oven.
Preheat oven to 450°.
While oven is preheating take the dough out of the refrigerator.
Place about a teaspoon of cornmeal onto a pizza peel, and spread it out in a thin layer.
Coat your hands with flour and grab up about a grapefruit sized piece of dough.
Pull the dough smooth, pulling it slightly from the center and tucking under while holding the dough in your hands until you have a nice smooth top.
Place loaf onto the prepared pizza peel, and smooth a thin layer of flour over the top of the loaf.
Allow the loaf to rest for 45 minutes.
Using a serrated knife cut 5 evenly spaced, ½ inch deep slashes into the top of the loaf.
Open oven door, slide loaf from the pizza peel onto the baking stone in the oven. Carefully pour a cup of water into the broiler pan below the baking stone and close the oven door to keep in as much of the steam as possible.
Bake loaf for 25-30 minutes or until a rich golden brown. Loaf is done when it sounds hollow when tapped.
Remove loaf from the oven and allow it to cool for at least one hour on a wire rack before cutting into it.