This cauliflower and potato casserole is a comforting and delicious dish that is perfect for a cozy dinner. It's made with layers of tender cauliflower florets, creamy mashed potatoes, and a cheesy sauce. The cauliflower is steamed until tender and combined with the mashed potatoes, creating a creamy and flavorful filling. The cheesy sauce is made with a combination of cheddar and Parmesan cheese, adding a rich and savory flavor to the dish. Topped with a sprinkle of breadcrumbs and baked until golden and crispy, this casserole is a satisfying and hearty meal that can be enjoyed on its own or served as a side dish.