Easy vegetarian chilli

Ingredients

• 2 tbsp vegetable oil
• 2 carrots, finely chopped
• 2 celery sticks, finely chopped
• 2 onions, finely chopped
• 2 tsp dried mixed herbs
• 2 garlic cloves, crushed or finely grated
• 1 red pepper, sliced
• 1 green pepper, sliced
• 2-3 tsp chilli powder (depending on how hot you like it)
• 2 tsp sweet smoked paprika
• 2 tbsp tomato purée
• 400g can red kidney beans, drained
• 400g can black beans, drained
• 2 x 400g cans chopped tomatoes
• 400ml vegetable stock
• cooked rice, grated cheddar and soured cream, to serve