2 teaspoons
freshly cracked black pepper, plus more to taste
1 cup
finely grated Parmigiano-Reggiano or Grana Padano, plus more for serving
1 ½ cups
finely grated Pecorino Romano
Method
Bring a large pot of salted water to a boil over high heat. Add the pasta and cook until just barley al dente. Reserve 1 cup of the pasta water and drain the pasta.
Meanwhile, heat the olive oil and 1 tablespoon of the butter in a large skillet over medium heat. Once the butter has melted, add the pepper and cook, swirling the pan, until fragrant, about 1 minute.
Add ½ cup of the reserved pasta water and bring to a simmer. Reduce the heat to low and add the pasta, remaining 1 tablespoon of butter, Parmigiano-Reggiano, and Pecorino Romano and toss until the cheese has melted and the pasta is tender and evenly coated. If necessary, add more cooking liquid 1 tablespoon at a time.
To serve, sprinkle with Parmigiano-Reggiano and season with pepper to taste.