"This sandwich is a favorite in the Bon Appétit Test Kitchen. It's a clever?and delicious?way to clean out the fridge...."
INGREDIENTS
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1 1-pound ciabatta, focaccia, or pain rustique, cut horizontally in half
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1/2 cup pesto or roasted red pepper spread
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1/4 cup mayonnaise
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8 thin cheese slices (such as Jack, Swiss, or Havarti)
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9 ounces assorted deli meats (such as salami, mortadella, prosciutto, ham, and turkey)
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2/3 cup sliced drained peperoncini or pickled jalape&ntlde;o chiles
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Thinly sliced red onion
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Sliced tomatoes
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Arugula or other lettuce