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 set aside

Lay 2 pieces of prosciutto overlapping lengthways on the work bench. Top with a quarter of the spinach and season with salt and pepper

Lay chicken breast on top of spinach and wrap up to enclose and cover. Repeat with remaining breasts

Heat butter in a large ovenproof frying pan. Add chicken and brown for 3-5 minutes each side. Place the pan in the oven and bake at 180°C for 12-15 minutes or until chicken is cooked through

Slice chicken into thick slices and serve drizzle over béchamel sauce. Accompany with green beans and roast potatoes