Boil 2 cups of water in a saucepan and add 1 packet (70 grams) of Maggi noodles. Cook the noodles for 2-3 minutes until they are soft but not mushy. Drain the water and set the noodles aside.
In a pan, heat 2 tablespoons of oil on medium flame. Add 1 finely chopped onion, 1/2 cup of chopped mixed vegetables (carrots, capsicum, and beans), and sauté for 3-4 minutes until the vegetables are slightly tender.
Add 2 tablespoons of Schezwan sauce, 1/2 teaspoon of soy sauce, and 1/2 teaspoon of tomato ketchup to the pan. Mix well and cook for 1-2 minutes.
Add the cooked Maggi noodles and the Maggi tastemaker masala to the pan. Toss everything together until the noodles are well coated with the sauce and vegetables.
Cook for another 2 minutes, and then turn off the heat. Garnish with chopped spring onions or coriander leaves before serving.