Shell prawns, leave tail intact, remove back vein.
In a microwave-safe glass dish, add butter, garlic and chillies.
Cook in microwave on HIGH power for 2 minutes, or until butter is bubbling.
Add prawns, cook in microwave on HIGH power for 1 to 2 minutes, or until prawns turn pink.
Serve immediately, sprinkled with parsley and lemon juice.