Heat the oven to 200C/fan 180C/gas 6. Tip the parsnips into a bowl with the oil and lots of seasoning, and toss well. Tip into a large roasting tin and put into the oven for 40 minutes, turning halfway, until lightly caramelised and cooked through.
Meanwhile, put the whisky and maple syrup into a small pan and reduce until syrupy, then add the vinegar. Pour all over the parsnips, toss well and put back in the oven for 15-20 minutes or until glazed.
*This recipe is gluten-free according to industry standards