Beef and Mushroom Stir-fry

This recipe is from the magazine Super Food Ideas.

750g (1.5lb) beef stir-fry strips
1/2 cup teriyaki marinade
1 1/2 tbsp sesame seeds
1 tbsp olive oil
1 red onion, cut into thin wedges
250g (8oz) button mushrooms, halved
300g (10oz) broccoli, trimmed, cut into florets
2 tsp sesame oil
steamed rice, to serve

1) Place beef into a bowl. Add marinade and toss. Cover and refrigerate for 30 minutes. Drain, reserving marinade.

2) Heat wok over high heat until hot. Add sesame seeds. Stir-fry for 2 minutes or until toasted. Remove to a plate.

3) Reheat wok. Add 1 tsp sesame oil and swirl to coat. Add one-quarter of beef. Stir-fry for 2 minutes. Remove to a plate. Repeat 3 more times.

4) Add remaining sesame oil and onion to wok. Stir-fry for 1 minute. Add mushrooms and broccoli. Stir-fry for 2 minutes. Return beef and half the reserved marinade to wok. Stir-fry for 1 to 2 minutes or until heated through. Add sesame seeds and olive oil. Stir. Serve with rice.