Fusilli with Green Beans, Pancetta, and Parmigiano

Green beans, cooked until crisp-tender, are the star of this show. If you don't have some growing in your own garden, this dish is worth a quick stop at the farmers' market. The pasta’s cooking water melts the cheese and turns it into a rich sauce that coats the beans and pulls everything together. If you can’t find pancetta, substitute bacon.

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  Kosher salt
  
  


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  1/2 lb. fusilli or other twisted pasta
  
  


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  4 oz. pancetta, sliced 1/4 inch thick and cut into 1/2 -inch squares (3/4 cup)
  
  


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  1 large clove garlic, smashed and peeled 
  
  


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  1/2 lb. green beans, trimmed and cut into 1-inch lengths (2 cups)
  
  


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  Freshly ground black pepper
  
  


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  2 Tbs. unsalted butter, at room temperature
  
  


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  2 oz. finely grated Parmigiano-Reggiano (1 cup)
  
  

Bring a medium pot of well-salted water to a boil. Cook the pasta until just barely al dente, about 1 minute less than package timing. Reserve 1 cup of the cooking water, and drain the pasta.

While the pasta cooks, put the pancetta in a cold 10-inch skillet and set over medium-high heat. When the pancetta starts sizzling, add the garlic and cook, stirring constantly, until starting to brown, 1 minute. Reduce the heat to medium and continue to cook the pancetta until golden but still chewy at the center (taste a piece if you’re not sure), an additional  2 to 3 minutes. If the pancetta has rendered a lot of its fat, spoon off all but 1 Tbs. of the fat from the pan.

Add the beans to the pan and cook, stirring constantly, until they’re crisp-tender, 3 to 4 minutes. Remove the garlic and season the beans with salt and pepper. With the pan still over medium heat, add the pasta, 1/2 cup of the pasta water, and the butter. Toss to combine. Add another 1/4 cup pasta water and 3/4 cup of the Parmigiano. Stir well and season to taste with salt and pepper. If necessary, add a little more pasta water to loosen the sauce.

Transfer the pasta to a serving bowl. Grind black pepper over the top and sprinkle with the remaining cheese.