Pasta Shells with Spinach and Cheese These giant pasta shells are incredibly versatile and can be filled with almost any filling you like. Today, I stuffed them with a creamy spinach and three-cheese mixture, then baked them in a smooth white sauce. The result was rich, comforting, and absolutely delicious. Ingredients For the pasta filling (½ bag giant pasta shells): 3 Tbsp olive oil 1 bag frozen spinach 1 onion, finely diced 5 garlic cloves, minced Salt and white pepper 2 portions cream cheese