For the pasta and sauce
01 -
1 lb (450 g) ziti pasta
02 -
1 tablespoon olive oil, plus more for the baking dish
03 -
1 lb (450 g) Italian sausage, sweet or hot, casings removed
04 -
1 small yellow onion, finely diced
05 -
4 cloves garlic, minced
06 -
1 can (28 oz or 795 g) crushed tomatoes
07 -
2 cups (480 ml) marinara sauce
08 -
1 teaspoon Italian seasoning
09 -
1/4 teaspoon crushed red pepper flakes, optional
10 -
1 teaspoon kosher salt, plus more for pasta water
11 -
1/2 teaspoon black pepper
For the three cheeses
12 -
15 oz (425 g) whole-milk ricotta cheese
13 -
1 large egg
14 -
1/2 cup (50 g) grated parmesan cheese, divided
15 -
3 cups (340 g) shredded low-moisture mozzarella cheese, divided
16 -
2 tablespoons chopped fresh parsley
17 -
2 tablespoons torn fresh basil, plus more for serving