Use a large, heavy based pot. Place the coconut oil, curry leaves, onion, garlic and green chillies and fry until fragrant.
Add dry spices except for the roasted curry powder and gently cook for 3 minutes.
Add water, coconut cream and mustard to the spices and stir until combined.
Add pumpkin and salt. The liquid should just cover the pumpkin, add a bit more water if necessary. Bring to the boil slowly. Reduce heat, place a lid on the pot and leave on low, cooking for 10-15 minutes or until the pumpkin is cooked but still firm.
Stir gently occasionally to ensure the curry does not stick. When pumpkin is cooked through, remove the dish from the heat.
Serve the curry with a sprinkle of roasted curry powder.