For the pasta
01 -
12 oz (340 g) linguine
02 -
1 tablespoon kosher salt, for the pasta water
03 -
1/2 cup (120 ml) reserved pasta water
For the beef and sauce
04 -
1 lb (450 g) ground beef, preferably 85/15
05 -
1 small yellow onion, finely chopped
06 -
4 tablespoons (56 g) unsalted butter
07 -
5 cloves garlic, minced
08 -
1 teaspoon Italian seasoning
09 -
1/2 teaspoon red pepper flakes, optional
10 -
1 teaspoon kosher salt, plus more to taste
11 -
1/2 teaspoon black pepper
12 -
1 cup (240 ml) heavy cream
13 -
1/2 cup (120 ml) beef broth
14 -
1 cup (115 g) shredded low-moisture mozzarella
15 -
1/2 cup (50 g) freshly grated Parmesan, plus more for serving
16 -
2 tablespoons chopped fresh parsley