Add the prosciutto at the last minute to preserve the pretty pink color.
Ingredients
4 Servings
1
2
2
2
1
2
1
1
3
Preparation
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Step 1
Cook pasta in a large pot of boiling salted water, stirring occasionally, until al dente. Drain, reserving 2 cups pasta cooking liquid.
Step 2
Meanwhile, heat oil and butter in a large heavy pot over medium heat. Add leeks and cook, stirring often, until softened but not browned, 5-8 minutes.
Step 3
Add pasta, chives, 2 teaspoons lemon zest, and 3/4 cup pasta cooking liquid. Cook, tossing and adding more cooking liquid by 1/4-cupfuls as needed, until a glossy sauce forms that coats pasta, about 4 minutes.
Step 4
Add arugula and 1/3 cup Parmesan, season with salt and pepper, and toss to combine. Add prosciutto and toss again. Top pasta with more lemon zest and Parmesan.