Preheat the oven to 190°C fan/210°C/gas mark 6.
Place all the ingredients in a sandwich bag and coat the parsnips by squishing the bag.
Leave to marinate for 10 minutes.
Pour the contents of the bag onto a baking tray and bake for 35 minutes.
This recipe has been specifically designed for a low protein diet. Refer to labels for allergen and other product information.