1 tbsp olive oil, plus extra to grease the tin
1 large red onion, peeled and finely chopped
3 garlic cloves, peeled and crushed
1 large leek, washed, trimmed and sliced
2 carrots, trimmed, peeled and sliced
1 large parsnip, trimmed, peeled and chopped
200g vacuum-packed chestnuts
100g pine nuts
3 tbsp fresh parsley, chopped
2 tbsp fresh thyme, chopped
2 tsp fresh rosemary, finely chopped
2 tsp wheat-free vegetable bouillon powder
100g soft mild goat cheese (optional)
fresh rosemary sprigs and bay leaves
vegetables for steaming (try celeriac, broccoli and carrots), chopped
Preheat the oven to 180C/gas mark 4.
Take a 24-cm ring-shaped cake tin and use to cut out a circle of greaseproof paper. Cut a hole in the centre of the paper 2cm larger than the hole in the tin. Make 1cm cuts, 3cm apart, around the inside and outside of the paper circle. Brush the tin with a little olive oil, line with the paper and brush with a little more oil.
Heat 1 tablespoon olive oil in a large frying pan. Gently cook the onion and garlic for 3-5 minutes, stirring occasionally until softened but not coloured. Add the leek, carrots and parsnip with 375ml water. Bring to the boil, then lower the heat and simmer for 6-8 minutes. The water will have evaporated and the vegetables should be tender when pierced with a knife. Allow to cool in the pan for 10 minutes.
Place the chestnuts in the food processor and blend for 10-15 seconds until roughly chopped. Transfer to a large bowl and add the vegetables, pine nuts, parsley, thyme, rosemary and bouillon powder. Mix well and spoon half the mixture into the prepared ring mould, pressing down well. Dot with half the cheese, if using, and then top with the remaining vegetable mixture. Dot with the rest of the cheese.
Bake for 40-45 minutes until lightly browned. Remove from the oven and allow to cool in the tin for 5 minutes.
Steam your chosen vegetables.
Carefully loosen the chestnut roast from the mould with a palette knife and turn out on to a warmed serving plate. Garnish with the fresh rosemary sprigs and bay leaves.