INGREDIENTS
3/4 lb
thin spaghetti
1 tbsp
kosher salt
1 lb
bulk mild Italian sausage
1/4 lb
cremini mushrooms, roughly chopped
1
medium onion, chopped, about 1 1/2 cups
2 cloves
garlic, minced
1/4 tsp
red pepper flakes
24 oz
marinara (San Marzano preferred)
1 1/2 cups
water
1 tbsp
Italian seasoning
1/4 cup
chopped fresh parsley
1 tbsp
olive oil plus more for greasing the casserole dish
1 cup
grated Parmesan cheese
2
eggs, beaten
1 cup
ricotta cheese
2 cups
shredded mozzarella cheese