How to Make It
Heat a cast-iron skillet or grill pan to medium-low. Spread 1 side of each piece of bread evenly with butter. On the other side of 1 slice, spread mustard, then top with 1 slice of cheese, apples, then another 2 slices of cheese. Top with the second piece of bread, buttered side up. Fry on both sides until the cheese is melted and the bread is toasted and golden, about 4 minutes per side. Let rest 1 minute. Cut in half and serve with Coke or your favorite "vacation-only" soda.
How to Celebrate Anything by Jenny Rosenstrach. Copyright 2016 by Jenny Rosenstrach. Reprinted by arrangement with Ballantine Books, an imprint of Random House, a division of Penguin Random House LLC. All rights reserved.