Spiced Seitan Fajitas
Give the skillet enough heat for the seitan and vegetables to pick up charred edges instead of steaming. Bring it to the table sizzling, with warm tortillas ready for everyone to fill.

Recipe link
Prep time15 min
Cook time20 min
Total time35 MINUTES
- Course
- Entrees
- Cuisine
- Mexican, Vegetarian Vegan
- Difficulty
- Easy
- Est. calories / serving
- 485
Ingredients
- 1 pound seitan or Marinated Seitan (sliced into strips)
- ½ cup Fajita Marinade
- 1 red bell pepper (julienned)
- 1 green bell pepper (julienned)
- 1 yellow bell pepper (julienned)
- 1 large yellow onion (thinly sliced)
- 2 tablespoons avocado oil (for sautéing)
- ½ teaspoon kosher salt
- ¼ teaspoon black pepper (coarse, freshly ground)
For Serving
- 8 whole wheat tortillas
Garnish
- cilantro (chopped)
- lime (wedges)
Instructions
Instructions
- Marinate the Seitan: Add the sliced seitan to a bowl and toss with the Fajita Marinade until evenly coated. Let sit for 10–15 minutes while you prepare the vegetables.1 lb seitan, ½ cup Fajita Marinade
- Cook the Peppers and Onions: Heat 1 tablespoon avocado oil in a large skillet, grill pan, or griddle over medium-high heat. Add the peppers, onion, kosher salt, and black pepper. Cook for 6–8 minutes, tossing occasionally, until tender and lightly charred. Transfer to a plate.1 red bell pepper, 1 green bell pepper, 1 yellow bell pepper, 1 onion, 1 tbsp avocado oil, ½ tsp kosher salt, ¼ tsp black pepper
- Brown the Seitan: Add the remaining avocado oil to the skillet. Add the marinated seitan and cook for 4–5 minutes, tossing occasionally, until hot and browned around the edges.1 tbsp avocado oil, marinated seitan
- Combine the Filling: Return the peppers and onions to the skillet with the seitan. Toss everything together and cook for 1–2 minutes until hot.seitan, peppers, onions
- Warm the Tortillas: Warm the whole wheat tortillas in a dry skillet, on a griddle, or wrapped in foil in the oven until soft and flexible.8 whole wheat tortillas
Notes
- Cook Hot: Fajitas should taste grilled, not steamed. Use medium-high heat and avoid overcrowding the pan.
- Slice Evenly: Thin, even strips of peppers, onions, and seitan cook quickly and fit better inside tortillas.
- Marinade Timing: The seitan only needs a short marinade because it is already cooked and absorbs flavor quickly.
- Warm the Tortillas: Whole wheat tortillas roll and fold much better when warm.
- Serving Suggestions: Serve with brown rice, Creamy Pinto Beans, Vegetarian Green Chili, Pico de Gallo, shredded lettuce, avocado, lime wedges, or Vegan Sour Cream.
Nutrition (Approximate Per Serving)
Yield
4 entrée portions — Serving size: 2 fajitas
- Calories
- 485
- Carbohydrates
- 56 g
- Protein
- 29 g
- Fat
- 18 g
- Saturated Fat
- 2 g
- Polyunsaturated Fat
- 5 g
- Monounsaturated Fat
- 9 g
- Cholesterol
- 0 mg
- Sodium
- 895 mg
- Potassium
- 685 mg
- Fiber
- 8 g
- Total Sugars
- 8 g
- Vitamin A
- 2680 IU
- Vitamin C
- 128 mg
- Calcium
- 128 mg
- Iron
- 5 mg
Equipment
- Large skillet, grill pan, or griddle
- Mixing bowl
- Tongs
- Chef’s knife
- Cutting board
- Measuring cups and spoons