Harvest Potato Casserole is a comforting and hearty dish that combines the flavors of fall. It features layers of thinly sliced potatoes, caramelized onions, and a creamy sauce made with cheese and herbs. The casserole is baked until the potatoes are tender and the top is golden and crispy. This dish is perfect for a cozy family dinner or as a side dish for Thanksgiving or other holiday gatherings.