Spinach Recipes: Cheesy Stuffed Shells

Ingredients

• 1 pound (450g) jumbo pasta shells
• 1 tablespoon olive oil
• 1 teaspoon salt
• 1 small onion, finely chopped (about ½ cup)
• 2 cloves garlic, minced
• 10 ounces (280g) fresh spinach, roughly chopped
• 15 ounces (425g) ricotta cheese, preferably whole milk
• ½ cup grated Parmesan cheese, plus more for topping
• 1 large egg, lightly beaten
• ¼ cup chopped fresh basil
• ¼ cup chopped fresh parsley
• ½ teaspoon salt
• ¼ teaspoon black pepper
• Pinch of nutmeg
• 28 ounces (800g) crushed tomatoes
• 1 teaspoon dried oregano
• ¼ teaspoon red pepper flakes (optional)
• ½ cup heavy cream