Chicken and Butternut Squash Curry

cooking oil

medium brown onion (, chopped)

medium carrot (, peeled and diced)

skinless chicken thigh fillets (, cut into 3cm pieces)

garlic (, crushed)

Thai red curry paste (mild if you can find it)

ready diced Butternut squash/pumpkin

green beans (, trimmed)

can coconut milk

brown sugar

Salt

Fresh coriander leaves to serve