1.Heat oil in a large, heavy-based saucepan over high heat. Sauté onion, 4-5 minutes, until golden. Add sugar and spices. Cook, 1 minute, until fragrant.
2.Gradually stir in coconut cream and stock. Simmer, 4-5 minutes.
3.Add prawns, tomatoes and sugar snap peas. Simmer, 2-3 minutes, until prawns change colour and are cooked through. Season.
4.Serve curry topped with coriander and accompanied with cucumber, lime and rice, if you like.
If you prefer to buy prawns with shells, increase the amount by about 250g to achieve 500g prawn meat.