INGREDIENTS
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Coarse salt and ground pepper
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3/4 pound spaghetti
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1 pound asparagus, trimmed and cut into 1 1/2-inch pieces
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3 tablespoons unsalted butter
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2 ounces Parmesan, grated (1/2 cup), plus more for serving
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5 large eggs, lightly beaten
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1/4 cup part-skim ricotta