Preheat your oven to 475 degree F.

Split the load of bread in half lengthwise.

Set the bread on a baking sheet, and using another baking sheet compress the bread until it is about 2/3s its original height. You can use some extra weight from pots and pans or gallons of milk to press it down.

Spread the bread with Garlic butter and sprinkle with Parmesan cheese.

Bake the bread on the middle rack in the oven for 7-8 minutes until just golden brown.

Drain the quart of tomato sauce through a fine mesh strainer to remove the water and to retain the paste.

Take the bread out of the oven and spread with the tomato sauce evenly over the top. Sprinkle with Italian seasoning.

Add whatever toppings you want, and then sprinkle the top with the mozzarella.

Bake until cheese is melted (8-10 minutes), remove from oven and sprinkle with a little more Parmesan.

Allow to cool a little and then cut with a large knife and serve.