Combine the mortadella, pancetta, provolone, salami, tomatoes, dressing, onions, lettuce and salt and pepper to taste in a bowl. Toss to combine and coat.
Carve out the center of the round loaf without cutting through the bottom to make a bowl. Put the dip into the bread bowl and top with the basil and giardiniera. Serve with the sliced bread.
Recipe courtesy of Jeff Mauro