Spaghetti Squash with walnuts

3 lbs spaghetti squash 3/4 teaspoon salt , DIVIDED 1/2 teaspoon black pepper , DIVIDED 5 tablespoons butter , DIVIDED 15 fresh sage leaves , DIVIDED 1/2 cup[...]

2 small spaghetti squash (1 1/4 to 1 1/2 pounds) 4 ounces mozzarella cheese , cut into small cubes (1 cup) 3 medium Tomatoes , seeded and chopped (1 1/2 cups)[...]

1 (3 1/2- to 4-lb) spaghetti squash 1/4 cup walnuts (3/4 oz) 1/2 garlic clove 1 1/3 cups packed fresh flat-leaf parsley 3 tablespoons extra-virgin olive oil 2[...]

2 small spaghetti squash (1 1/4 to 1 1/2 pounds) 4 ounces mozzarella cheese , cut into small cubes (1 cup) 3 medium tomatoes , seeded and chopped (1 1/2 cups)[...]