Gouda Cheddar Parmesan Scalloped Potatoes Au Gratin is a decadent side dish that layers thinly sliced potatoes with a rich blend of Gouda, sharp cheddar, and Parmesan cheese. Baked to perfection, this creamy delight features a golden, bubbly top that will impress at any gathering. Perfect for weeknight dinners or festive occasions, these scalloped potatoes are sure to become a family favorite.