For the spaghetti filling
01 -
8 oz (225 g) dried spaghetti
02 -
1 1/2 cups (360 ml) marinara sauce
03 -
1/2 teaspoon kosher salt, plus more for pasta water
04 -
1/4 teaspoon black pepper
05 -
1/4 teaspoon red pepper flakes, optional
For the garlic bread subs
06 -
4 sturdy sub rolls or hoagie rolls
07 -
4 tablespoons (56 g) unsalted butter, melted
08 -
3 garlic cloves, finely minced
09 -
2 tablespoons chopped fresh parsley, divided
10 -
1/2 cup (50 g) grated Parmesan cheese
11 -
1 cup (115 g) shredded mozzarella cheese