Mango chicken, bean & rice bake

Name: Mango chicken, bean & rice bake
Prep time: 20 min
Cook time: 1 h 10 min
Total time: 1 h 30 min
Cuisine: Caribbean
Ingredients: small bunch spring onions , chopped; thumb-sized piece ginger , chopped; 3 garlic cloves; 1 red chilli , seeds removed if you don't like it too hot; small handful coriander , stalks roughly chopped and leaves picked; 1 tbsp thyme leaf; zest and juice 1 lime , plus 1 lime cut into wedges to serve; 1 ½ tsp ground allspice; 2 tbsp sunflower oil; 8 chicken drumsticks; 300g long grain rice; 400g can kidney bean , rinsed and drained; 500ml chicken stock; 1 ripe mango , peeled, stoned and cut into bite-sized chunks; 200g mango chutney , plus extra to serve (optional)