3 small to medium spaghetti squash (about 5 cups cooked)
salt and fresh pepper, to taste
1/3 cup part skim ricotta cheese
2 tbsp grated parmesan cheese
1 tbsp chopped parsley (or basil)
3/4 cup whole milk shredded mozzarella cheese

For the sauce:

1 tsp olive oil
1/2 onion, finely chopped
3 cloves garlic, minced
14 oz Italian chicken sausage
14 oz (1/2 can) crushed tomatoes (I prefer Tuttorosso)
salt and fresh pepper, to taste
2 tbsp chopped basil