I like to use Gruyere cheese because the flavor is incredible, but it can be expensive. If you need a cheaper option, try freshly shredded mozzarella cheese since it melts nicely. It just won’t be as flavorful. Also, you could use cheddar cheese or a combination of any of these.
I suggest getting a block of cheese and shredding it. Don’t buy the pre-shredded stuff as it doesn’t melt as nicely.
Make this perfect side dish even cheesier by garnishing it with parmesan cheese.
When adding the potato layers, don’t layer them too thick or too tight together. You want all the potatoes to cook evenly.