These are the perfect sandwiches for a picnic on the lake as they benefit from being wrapped and packed tightly. You can make a whole loaf which is more traditional (as below) but I generally buy triangle ciabatta buns from Costco and make individual sandwiches.
Tapenade FIlling
Cut bread in half horizontally (pull out some to make a hollow if you want). Put half the pilling on bottom, top with cheese and meats (whatever Italian meat you like & provolone) then rest of filling on top. Tightly wrap and put a weight on them for several hours in fridge.
Use premade tapenade from a jar instead of making it yourself