It’s no surprise that kids love grilled cheese. All that buttery, melty goodness, between two slices of bread has been a childhood favorite for decades, and us adults love to indulge in this comfort food from time to time, too! The trick to a really great grilled cheese is using a hot cast iron skillet and plenty of butter. To make sure your sandwich cooks through without burning, be sure to cover your pan with a lid or dome to trap the heat.

Now, as much as we adore the classic white bread and American cheese version, we’ve doctored up some new combinations with a few imaginative ingredients. Add avocado, prosciutto, Gruyère, pickled onion, pear, or balsamic glaze for instance, and your sandwich will go from simple to gourmet in no time. Check out some of our favorite pairings below, and have a little fun being a kid again.