Mix the beef, oil, garlic, ginger and chilli together and leave to marinate in a shallow dish for 15 minutes.
Heat a wok or frying pan, add the beef and stir fry for 3–4 minutes.
Add the broccoli, sweetcorn and stock and cook for 5 minutes, adding a little more stock if necessary.
Place the noodles in a saucepan of water, bring to the boil and then reduce the heat. Cook for 3 minutes, or until just cooked. Drain well.
Add the noodles to the beef and vegetables, stir in the soy sauce and garnish with the spring onion. Serve.