Ingredients : 1/2 cup mayonnaise (or salad dressing) 1 cup mozzarella cheese, grated 2 medium tomatoes, seeded,finely chopped 1/4 cup black olives, chopped 1/4 cup parmesan cheese (preferably freshly grated) 1 teaspoon oregano 1/4 teaspoon basil 1 teaspoon black pepper 1 baguette, fresh, about 2 1/2″ round and 27″ long 1/3 cup butter, softened