Steps
In a bowl, combine vital wheat gluten, water, soy sauce, garlic powder, and onion powder until a dough forms.
Knead the dough for about 5 minutes until elastic.
Shape the dough into a log and let it rest for 10 minutes.
Slice the rested dough into bite-sized pieces.
In a pan, heat olive oil over medium heat and add the sliced seitan.
Cook for about 5 minutes until browned, then add mixed vegetables.
Stir-fry for another 5 minutes until the vegetables are tender.
Add soy sauce, sesame oil, salt, and pepper, stirring to combine.
Serve hot.