"This lighter take on tuna casserole gets brightness and crunch from fresh asparagus and arugula...."
INGREDIENTS
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2 tablespoons unsalted butter
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8 ounces cavatappi or other short spiral pasta
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1 3/4 cups low-sodium chicken broth
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1 cup thinly sliced shallots (from 3 to 4)
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Kosher salt and freshly ground pepper
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1 pound asparagus, trimmed and cut into 1 1/2-inch pieces (3 cups)
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5 ounces baby arugula (4 packed cups)
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1/2 cup freshly grated Parmesan, plus more for serving
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1/2 teaspoon finely grated lemon zest, plus 4 teaspoons fresh juice
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2 cans (5 ounces each) oil-packed tuna, drained
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Extra-virgin olive oil, for drizzling