This cauliflower and potato casserole is a comforting and delicious dish that's perfect for cooler weather. The cauliflower and potatoes are cooked until tender and then mashed with butter, milk, and a hint of garlic. The mixture is then topped with a layer of melted cheese and baked until golden and bubbly. The combination of creamy mashed vegetables and gooey cheese makes this casserole a crowd-pleaser. Serve it as a side dish or a vegetarian main course for a satisfying and nutritious meal.