For best results, use a mandoline to ensure the potatoes are thinly and evenly sliced. This will help them cook thoroughly and crisp up nicely in the oven. If you don’t have time for multiple stretch and folds, you can do a single, longer rise in the refrigerator overnight. Feel free to experiment with different types of cheese or toppings. Some other great options include Parmesan cheese, roasted garlic, or fresh rosemary.