01 - 
                Place cauliflower florets, cubed butternut squash, and diced red onions in a large mixing bowl.
              
              
              
                02 - 
                Add grated Parmesan cheese, sea salt, and black pepper to the bowl and toss to combine.
              
              
              
                03 - 
                Pour in the celery soup and stir thoroughly until all the ingredients are evenly coated.
              
              
              
                04 - 
                Transfer the mixture to a square baking dish and spread in an even layer. Generously top with aged cheddar cheese.
              
              
              
                05 - 
                Preheat oven to 190°C. Bake uncovered for 25 minutes, or until the cheese is golden and the vegetables are tender.
              
              
              
                06 - 
                Remove the dish from the oven and allow it to cool for several minutes before serving.