Spray wok with low calorie cooking spray and place on medium to high heat.
Add the stir fry beef strips and fry for 5 minutes until browned on both sides, push to one side then add the onion, garlic, ginger, broccoli and red pepper and cook for 3 to 5 minutes until softened.
In a bowl, add the granulated sweetener, soy sauce, fish sauce, Henderson's Relish, water, salt and pepper and mix well.
Add the sauce mixture to the beef and vegetables and mix well. Add the spring onion and cook for 3 to 5 minutes until the sauce has thickened and is coating the meat and vegetables.
Cook the egg noodles following the instructions on the packet, then drain and divide between 4 bowls, top with the beef and broccoli and serve.