135g pack peeled and cooked chestnuts (we like Merchant Gourmet)
2 garlic cloves
4 tbsp chopped fresh flatleaf parsley
1 tsp lemon juice
125ml extra-virgin olive oil, plus extra for frying
20g vegetarian Parmesan, finely grated, plus extra for serving
Large knob of butter
250g chestnut mushrooms, sliced
350g fusilli pasta
1. In a mini food processor, whizz the chestnuts, garlic, parsley, lemon juice and some seasoning to a course paste. Slowly add the oil, then stir through the cheese.
2. Heat a splash of oil and a knob of butter in a frying pan over a medium-high heat. Add the mushrooms and fry for 5 minutes until golden.
3. Meanwhile, cook the pasta in a pan of boiling water until al dente. Drain and toss with the mushrooms and pesto. Top with Parmesan to serve.