Family meals: Chicken & veg casserole

Name: Family meals: Chicken & veg casserole
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 15 min
Cuisine: Spanish
Ingredients: knob of butter; 1 onion , finely chopped; 3 medium carrots , finely chopped; 2 medium sticks celery , finely chopped; 500g approx chicken thigh; 2 fat garlic cloves , crushed; 1 tsp sweet smoked paprika; ½ tsp ground cumin; 1 tsp dried thyme; 2 x 400g cans chopped tomatoes; 1 chicken stock cube; 1 red or orange pepper , diced; 1 x 400g can chickpeas , drained (optional)