Start by bringing a large pot of salted water to a boil. Add the 8 oz of pasta and cook according to the package instructions until al dente. Reserve about ½ cup of pasta water, then drain the pasta in a colander.
In a large skillet over medium heat, melt the 2 sticks of salted butter. Allow it to bubble gently, stirring occasionally to prevent browning.
Once the butter is melted, add the drained pasta to the skillet. Toss the pasta in the buttery sauce, ensuring every strand is coated.
Gradually sprinkle in the ½ cup of freshly grated Parmesan cheese, stirring until it melts and combines with the butter. Add the shaved or grated black truffle, mixing well. If the sauce feels too thick, add a little of the reserved pasta water to achieve your desired consistency.
Season with salt and pepper to taste. Serve your Black Truffle Pasta immediately, garnished with freshly chopped parsley and additional Parmesan if desired.