Chicken enchiladas

Name: Chicken enchiladas
Ingredients: 3 tbsp olive oil; 2 red onions, sliced; 2 red peppers, sliced; 3 red chillies, 2 deseeded and chopped, 1 sliced; small bunch coriander, stalks finely chopped, leaves roughly chopped - plus extra to serve (optional); 2 garlic cloves, crushed; 1 tbsp ground coriander; 1 tbsp cumin seeds; 6 skinless chicken breasts, cut into small chunks; 415g can refried beans (we used Discovery); 198g can sweetcorn, drained; 700ml bottle passata; 1 tsp golden caster sugar; 10 tortillas; 2 x 142ml pots soured cream; 200g cheddar, grated