For the pasta
01 -
12 oz (340 g) spaghetti
02 -
5 oz (140 g) fresh baby spinach, roughly chopped if large
03 -
1 tablespoon kosher salt, for the pasta water
For the sauce
04 -
1 tablespoon oil from a jar of oil-packed sun-dried tomatoes
05 -
1/2 cup (65 g) oil-packed sun-dried tomatoes, drained and thinly sliced
06 -
1/2 small yellow onion, thinly sliced
07 -
4 cloves garlic, minced
08 -
1/4 teaspoon crushed red pepper flakes, plus more to taste
09 -
1/2 teaspoon fine salt, plus more to taste
10 -
1/4 teaspoon black pepper
11 -
1 cup (240 ml) low-sodium vegetable broth
12 -
3/4 cup (180 ml) heavy cream
13 -
1/2 cup (45 g) finely grated Parmesan cheese, plus more for serving
14 -
1 tablespoon unsalted butter