BBC Food - Recipes - Smoky bean chilli with quinoa

Ingredients

• 2 tbsp olive oil
• 2 medium onions , sliced
• 1 yellow pepper , deseeded, cut into chunks
• 1 medium sweet potato (approximately 300g/10½oz), peeled, cut into chunks
• 1 tsp ground coriander
• 1 tbsp plain flour
• 400g tin chopped tomatoes
• 2 tbsp chipotle paste (available at larger supermarkets and delicatessens)
• 400g tin cannellini beans , rinsed and drained
• 400g tin red kidney beans , rinsed and drained
• salt and freshly ground black pepper
• soured cream , to serve (optional)
• 150g/5oz quinoa , rinsed
• 1 ripe but firm avocado , halved, stone removed, flesh scooped out
• 1 lime , juice only
• 4 spring onions , finely sliced
• 1½ tbsp chopped fresh coriander , plus extra to garnish