Preheat oven to 180 C.
Remove the green leaves from the cauliflower head and trim the end of the thick stalk so that you are left with the whole head.
Lightly steam the cauliflower or boil it until it is just tender.
Remove from the pot and place into an ovenproof baking dish.
Place the milk into a small pot then whisk in the contents of the sachet of KNORR Naturally Tasty Creamy Chicken & Broccoli Bake and the cheddar cheese.
Place onto the stovetop and heat until the cheese has melted and the sauce has started to thicken, whisking frequently.
In the meantime start to prepare the crispy topping – place the breadcrumbs, butter, Parmesan, thyme and nutmeg into a bowl and rub together using your fingertips until combined then season to salt and black pepper.
Pour the hot cheese sauce over the cauliflower and top with the breadcrumb topping.
Bake in the oven for 30 minutes.