Cut the garlic and onion into thin slices. Cut the tenderstem broccoli into 2" pieces, cut the stem part into half lengthways . Cut the chillies into half lengthways. ( Scrape the chilli seeds out if you don't like too spicy. )
Heat the pan into medium heat, drizzle 2 tbsp oil. Add the garlic and stir for a few seconds. Then add the onion slices and stir for a few seconds.
Add the king prawns and stir fry with medium high heat for 1-2 mins.
Add the broccoli pieces and pour soy sauce and oyster sauce in. Then add the cut chillies. Continue stir fry until the broccoli is nearly softened.
Add the corn flour and water mixture in, stir well for a few seconds.
Add sesame oil, black pepper and salt to taste. When the broccoli is tender, transfer to a serving plate.
Simply delicious King Prawn and broccoli is ready. Perfect with a bowl of steamed rice or a simple stir fry noodle. Enjoy!