This cauliflower and potato casserole is a comforting and hearty dish that's 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, adding a rich and gooey texture to the dish. Topped with a sprinkle of breadcrumbs and baked until golden and crispy, this casserole is a satisfying and nutritious meal that's sure to please the whole family.