Vegetarian chilli

INGREDIENTS

• 175g/6oz green lentils
• 2 tbsp sunflower oil
• 1 large onion
• 1-2 cloves garlic
• 1-2 tsp chilli powder
• 1 tsp cumin
• 1 red and 1 green pepper
• 2 carrots
• 2 x 400g/14oz cans chopped tomatoes
• 1 heaped tbsp tomato purée
• 300ml/½ pint vegetable stock
• 100g/4oz frozen peas
• 175g/6oz mushrooms
• 1 courgette
• salt and freshly ground black pepper
• 1 can kidney beans