The ultimate Italian comfort food — butter and Parmigiano melted over hot pasta. This vegetarian mediterranean classic is a family staple that children and adults adore equally.
Bring a large pot of water to a rolling boil over high heat and season generously with kosher salt.
Add spaghetti and cook, stirring occasionally, until just al dente; check for doneness at around 8 minutes.
Reserve 1 cup of pasta cooking water, then drain spaghetti promptly so it remains hot.
Return the hot pasta to the pot (heat off), add unsalted butter and half the Parmigiano-Reggiano; toss vigorously to melt and coat evenly.
Add reserved pasta water little by little while tossing, then mix in remaining Parmigiano; finish with freshly cracked black pepper and serve immediately while creamy.