Garlic Chicken & Spinach Stuffed Shells

Bahan-bahan (6 porsi)

• 32 (around 8 oz/227g) jumbo pasta shells
• 1 Tablespoon olive oil
• 4 cloves garlic, minced
• 5 ounces (142g) fresh spinach
• 15 ounces (425g) ricotta cheese
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 1 teaspoon Italian seasoning
• 1 large egg
• 1/3 cup (34g) grated parmesan cheese
• 1 and 1/2 cups (170g) shredded mozzarella cheese, divided
• 2 cups (300g) chopped or shredded cooked chicken breast
• 24 -ounce (680g) jar marinara sauce (about 3 cups), divided
• for serving: fresh basil and more parmesan