In a small bowl, combine the Parmesan cheese, oregano and parsley; set aside. In a large bowl, beat butter and garlic. Gradually beat in oil until smooth. Spread over one side of bread. Place with buttered side up in greased large shallow baking pans. Top each slice with 1/4 cup mozzarella. Sprinkle with Parmesan mixture.
Bake at 400° for 10-12 minutes or until the cheese is melted and top is lightly browned. Serve warm.