Crockpot Au Gratin Potatoes is a delicious and comforting side dish made with layers of thinly sliced potatoes, creamy cheese sauce, and a crispy breadcrumb topping. This slow cooker recipe is easy to prepare and perfect for busy weeknights or holiday gatherings. The potatoes cook to tender perfection in the crockpot, absorbing all the flavors of the cheesy sauce. Serve these creamy and cheesy potatoes as a side dish with roasted meats or enjoy them on their own for a satisfying vegetarian meal.