"Three make a meal, but a bunch make fun party hors d'oeuvres. Look for the rolls at a local bakery...."
INGREDIENTS
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1/2 pound ground beef
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1/2 pound ground pork
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1/2 pound ground veal
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1/2 cup panko (Japanese breadcrumbs)*
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1/2 cup water
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8 tablespoons freshly grated Pecorino Romano cheese, divided
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1 large egg
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1 large egg yolk
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1/4 cup plus 2 tablespoons chopped fresh parsley
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1 teaspoon salt
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1/2 teaspoon ground black pepper
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1/4 cup vegetable oil
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2 tablespoons olive oil
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1 cup chopped onion
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6 garlic cloves, chopped
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1/4 cup (packed) fresh basil leaves
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1 1/2 teaspoons fennel seeds
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1 28-ounce can whole peeled tomatoes
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1 14.5-ounce can whole peeled tomatoes
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Arugula leaves (optional)
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18 small soft rolls, split horizontally