Fill a large pot with water and bring it to a boil over high heat. 

Add a small amount of salt and the pasta to the water.

Cook the pasta for 6-8 minutes, stirring occasionally, until al dente. 

Reserve 2/3 c. pasta water and drain the pasta. 

Place the pasta back into the pot or a large skillet and place over low heat. 

Add the reserved pasta water and butter to the pasta, toss together until the butter melts.

Add the grated cheese and black pepper, continuing to toss until the cheese melts and forms a creamy sauce. 

Top with more grated cheese before serving.