To make the shoyu sauce, stir together soy sauce, garlic, and scallions. Set aside.
Stir fry vegetables and mushrooms in a about 2 tablespoons of hot oil.
Simmer noodles in boiling water for about 3 minutes. Drain. Stir fry together noodles and vegetables. Add soup base packet to 1/2 cup of hot water and pour over noodles and vegetables; stir a few times until liquid is absorbed.
Cut tofu in squares. Coat with cornstarch and fry in hot oil until golden brown, Drizzle tofu with shoyu sauce