Seitan with onion sauce

Name: Seitan with onion sauce
Prep time: 5 min
Cook time: 10 min
Total time: 15 min
Cuisine: American
Ingredients: 1 jar of Bio Eco Basket Seitan; 1 medium sweet onion; 4 or 5 roasted potatoes (I have used them roasted in the oven but in the microwave, steamed or cooked they are also worth it); 2 tablespoons of flour of your choice; 1 tablespoon of tahin; Olive oil, oregano and salt