"We set out to make stromboli—the calzone’s more stylish cousin—simple enough for a weeknight supper...."
INGREDIENTS
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8 ounces hot Italian sausage, casings removed
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3/4 teaspoon minced fresh rosemary
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1 pound store-bought pizza dough
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4 ounces thinly sliced aged provolone cheese
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4 ounces mozzarella cheese, shredded (1 cup)
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1/4 cup chopped jarred hot cherry peppers
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1/4 cup chopped onion
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1 large egg, beaten