Celeriac & walnut gratin

• celeriac↗1 large
• walnut oil↗2 tbsp tbsp
• vegetable stock↗300ml ml
• walnuts↗handful chopped

  handful chopped

• blue cheese↗100g g

  such as bleu d'Auvergne or stilton

Step-by-step instructions

1. 1

   Heat oven to 190C/fan 170C/gas 5. Peel, quarter and very thinly slice the celeriac - this is best done with the slicing blade of a food processor. Toss in the walnut oil, salt and pepper, and spread over a gratin dish. Pour over the stock and bake for 40-45 mins, then sprinkle with the walnuts, crumble over the cheese, then cook for 15 mins until crisp and golden.