In a large bowl, add the vital wheat gluten, flour, nutritional yeast, onion powder, garlic powder, thyme and salt. Stir well to combine.
Pour the broth and olive oil in the bowl with the dry ingredients, and stir well with a large spoon until the dough starts to pull away from the bowl.
Transfer to a lightly floured surface and knead with your hands for 2-3 minutes. It will be a messy dough.
Tear the dough into bite sized pieces.
Prepare a large pot with a steamer basket with 1-2 inches of water on the bottom. Place the pieces of seitan in the basket and steam for 15 minutes.
If using the honey ginger sauce, add the garlic, ginger, soy sauce, agave, seasoned rice vinegar and cornstarch to a small bowl and whisk to combine.
In a large sauté pan, warm the olive oil over medium heat. Add the steamed seitan pieces and pan fry on each side until golden brown and crispy on the outside.
Lower the heat and pour the sauce over the seitan. Stir constantly until thickened and the seitan is coated in the sauce.
Serve immediately with rice, if desired and perhaps a side of steamed broccoli.