Yeah, seitan is the protein part of the dish, so it takes the place of other proteins, not starches. I like to make a weekly seitan and potatoes dish for myself and my roommate. Just use a good flavor base for "steak" and make certain to run it through the food processor's cutting blade for 10+ minutes, and of course wrap tightly and bake in the oven. And of course, before frying it in oil on a pan - don't forget to score both sides of the seitan steak with dozens of crisscrossed score marks.