Now a staple of American cuisine, grilled cheese sandwiches were first gobbled up in ancient Rome. In the 1920s they were an open-faced national favorite in the states. And by the 1950s it was popular to add a second slice of bread and pair with tomato soup for nutrient-rich nourishment. In modern times grilled cheese sandwiches have become a deliciously melty meal-solution for all ages, from kid-friendly, fun variations to grown-up gourmet delights. Here are a few tips to help you find the cheesy combination perfect for any palate: