Heat the oil in a wok or frying pan over a low heat until hot. Add the red onion and fry for 1-2 minutes.
Add the capsicums, snow peas and broccoli and cook for another 3-4 minutes until almost soft.
Stir in the pineapple (optional) and the sauce.
Heat through for 2-3 minutes.
Serve with Loprofin Rice or Loprofin Spaghetti.