Tomato, lentil & lime soup

Ingredients

• 1 onion , roughly chopped
• 1 large carrot , peeled and grated
• olive oil
• a pinch chilli flakes (optional)
• 1 tsp cumin seeds
• 3 tbsp Puy or red lentils
• 1 x 400g tin chopped tomatoes
• 300ml vegetable stock
• 1 lime , juiced and zested
• crusty bread , to serve 

1. Cook the onion and carrot in a little oil until softened then add the chilli flakes (if using) and cumin. Cook for a minute then tip in the lentils, tomato and stock. Simmer for 15-20 minutes until the lentils are soft. Blitz briefly with a stick blender so you have a semi-smooth texture then stir in the lime juice and zest.