For the pasta
01 -
12 oz (340 g) penne, rigatoni, or fettuccine
02 -
1 tablespoon kosher salt, for the pasta water
03 -
1 cup (240 ml) reserved pasta water
For the sausage
04 -
1 lb (450 g) smoked sausage, sliced into 1/2-inch coins
05 -
1 tablespoon olive oil
06 -
2 tablespoons (28 g) unsalted butter
07 -
4 cloves garlic, minced
08 -
1 teaspoon Italian seasoning
09 -
1/2 teaspoon red pepper flakes, optional
For the Parmesan sauce
10 -
2 tablespoons (28 g) unsalted butter
11 -
1 1/2 cups (360 ml) heavy cream
12 -
1 cup (100 g) freshly grated Parmesan cheese, plus more for serving
13 -
1/2 teaspoon black pepper
14 -
Salt, to taste
15 -
2 tablespoons chopped fresh parsley