Gently add the sweet potatoes and cook for about 5 minutes, stirring constantly.
When the potatoes start to soften just slightly (5-10 minutes), stir in the mushrooms and onions and continue cooking.
If you find the oil is drying out, add in the vegetable broth as needed to continue cooking.
When all the veggies are cooked through, add in the seitan and cook for another 2 -3 minutes or until the seitan is warmed through.
Turn off the heat and quickly stir in the fresh parsley.
Serve with salt and pepper as needed.
Notes
Please note that the nutrition data below is a ballpark figure. Exact data is not possible. Also note that the sodium can be reduced by using either low sodium or homemade vegetable broth.