For the pasta and chicken
01 -
1 lb (450 g) rotini pasta
02 -
3 cups (420 g) cooked chicken, shredded or diced
03 -
1 cup (240 ml) reserved pasta water, divided
For the sauce
04 -
2 jars, 15 oz each (425 g each), Alfredo sauce
05 -
1 cup (240 ml) garlic Parmesan sauce
06 -
1/2 teaspoon kosher salt, plus more for pasta water
07 -
1/4 teaspoon black pepper
08 -
1/4 teaspoon red pepper flakes, optional
For the cheese topping
09 -
2 cups (225 g) shredded mozzarella cheese, divided
10 -
1/2 cup (50 g) grated Parmesan cheese, divided
11 -
1 tablespoon butter or cooking spray, for greasing the dish
12 -
2 tablespoons chopped fresh parsley, for serving