This innovative veggie casserole takes stuffed pasta shells to the next level. It features jumbo pasta shells filled with a creamy mixture of artichokes, spinach, and cheese. The artichokes add a tangy and slightly sweet flavor, while the spinach provides a burst of freshness. The shells are then baked in a rich tomato sauce and topped with melted cheese. This casserole is a crowd-pleaser and a great option for a vegetarian main dish. Serve it with a side salad for a complete and satisfying meal.