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Portobello Fajitas

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Tender thick slices of fajita-seasoned portobello mushrooms tucked into toasty-warm yellow corn tortillas and topped it with charred peppers and onions, fresh avocado, tomatoes and cilantro. A delicious meatless meal!
Course Mains & Entrees
Cuisine Tex Mex
Keyword fajitas, meatless, mushrooms, portobello, tacos, vegetarian
Prep Time 5 mins
Cook Time 20 mins
Total Time 25 mins
Servings 6 servings
Calories 147
Author Laurie McNamara



  • olive oil
  • 1 red bell pepper sliced into strips
  • 1 green bell pepper sliced into strips
  • 1 large yellow onion sliced
  • 4 portobello mushroom caps about 12 ounces, stems removed and sliced 3/4 of an inch thick
  • 1 lime juiced
  • 2 tablespoons fajita seasoning
  • 12 soft corn tortillas pan-toasted or warmed


  • sliced avocado
  • diced tomatoes
  • sliced jalapenos
  • cilantro leaves


  • Drizzle a tablespoon of oil into a 12-inch cast iron skillet and pre-heat over medium-high heat. Once the pan is very hot, add in the peppers, onions and a generous pinch of kosher salt.
  • Toss them in the oil and cook until edges are caramelized and the vegetables are tender yet firm still. About 10 to 15 minutes. Transfer the cooked peppers and onions to a bowl and cover with foil.
  • Meanwhile, in a large bowl mix together the 2 tablespoons of oil, the lime juice and fajita seasoning. Gently toss the sliced mushrooms into the fajita mixture.
  • Add a teaspoon more of oil into the same skillet that the peppers and onions were in, add in all of the mushrooms and cook until soft, yet firm and saucy.
  • While the mushrooms are cooking quickly warm/toast up the corn tortilla (30 seconds to a minute per side depending on if you want them soft or crispy).
  • Place a few strips of the mushrooms on the corn tortillas, top with peppers, onions and any other toppings your heart desires.


Serving: 2tacos | Calories: 147kcal | Carbohydrates: 31g | Protein: 5g | Fat: 2g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Sodium: 31mg | Potassium: 417mg | Fiber: 5g | Sugar: 4g | Vitamin A: 704IU | Vitamin C: 46mg | Calcium: 58mg | Iron: 1mg