Pull some of the soft middle from both halves of the roll out to make a well. Spread the cream cheese on the bottom of the roll. Top with the olives, artichoke hearts, tomato, roasted pepper, basil leaves, followed by the mixed sliced vegetables. Drizzle the artichoke marinade over the vegetables. Season with a pinch of salt and several cracks of black pepper. Sandwich with the top half of the roll and wrap tightly in plastic wrap and refrigerate for at least 3 hours up to overnight (this allows the flavors to meld).
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