Preheat the oven to 400ºF. Cut the French loaf in half lengthwise, then cut each half open into two pieces. Place the pieces of French Bread, cut side up, on a large baking sheet. Top each piece of bread with about 2 Tbsp pizza sauce and 1 oz. mozzarella. Add any additional toppings you desire. Bake the pizzas in the preheated oven for 10-15 minutes, or until the cheese is melted and bubbly, and the bread is slightly brown and crispy on the edges. Serve hot.