Easy Mexican bean stew

Name: Easy Mexican bean stew
Ingredients: low-calorie cooking spray; 1 onion, thinly sliced; 2 garlic cloves, crushed; 1 yellow pepper, deseeded and cut into 3cm/1in chunks; ½ tsp hot chilli powder; 1 tsp ground cumin; 1 tsp ground coriander; 400g tin chopped tomatoes; 2 tbsp tomato purée; 400g tin mixed beans, drained and rinsed; 125g/4½oz brown rice, to serve; 100g/3½oz fat-free Greek yoghurt, to serve; 1 lime, cut into wedges, to serve; salt and freshly ground black pepper; 1 tomato, roughly chopped; 4 tbsp roughly chopped freshly coriander; 2 spring onions, thinly sliced