Place milk, dairy spread, flour and nutmeg (if using) into a cold saucepan all at the same time, then bring to the boil over medium heat whisking constantly until thick, smooth and glossy

Stir in cheese until melted. Remove from heat and use as required

Steam or microwave cauliflower for 3-5 minutes until just tender, season to taste. Place in a single layer in a serving dish and keep warm

Pour béchamel sauce over cauliflower. Scatter with hazelnuts, thyme, parsley and lemon zest. Serve immediately