This one is a bit of a cheat but was very tasty and easy!
500g finely sliced frying steak (mine was a mixture of tescos beef stir fry strips and 1 large piece of frying steak bought reduced!)
1/3 bottle (enough to cover) Good quality thick oyster sauce, mine came from chinese supermarket..
2 cloves garlic, finely chopped
1 tsp meat tenderiser (I used Rajah's)
1/2 head broccoli cut into small florets
1) Mix the beef, garlic, meat tenderiser and season very well with the black pepper, and marinade for 10 minutes
2) Heat a pan to medium-hot, add 1 tbsp oil and fry the broccoli for 2 minutes, stirring reguarly, now add the steak and its liquid, fry for 3-4 minutes and serve immediately with noodles / rice etc
(If you have leftover liquid after everythings gobbled, save it and freeze, next time you make rice add the sauce and and veg diced small and serve as a one pot, add extra stock if needed)