To prepare the Olive Spread, put all the ingredients into the bowl of a food processor. Pulse the mixture until finely chopped. Set aside.
To prepare the sandwich, cut the bread in half horizontally. Scoop out some of the bread from the center of the top half, creating a dome effect. (You need space for the fillings!) Then, evenly spread the olive mixture on both halves of the bread.
Evenly layer the ham, salami, Provolone, capicola, mortadella, and Mozzarella, in that order, on the bottom of the sandwich. Then, carefully place the top half of the bread, olive-spread-side down, onto the layered meats and cheeses.
Wrap the entire sandwich in plastic wrap and refrigerate for at least for 1 hour. (Refrigerate up to 24 hours.) Slice the sandwich into 12—14 wedges and serve.
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