Muffuletta-Style Grilled Stuffed Flank Steak With Salumi, Provolone, and Olive Salad Recipe

whole flank steak, 2 to 2 1/2 pounds, trimmed of excess fat

Kosher salt and freshly ground black pepper

New Orleans-Style Olive Salad

thinly sliced prosciutto

thinly sliced capicola

thinly sliced mortadella

thinly sliced Provolone cheese