
Say hello to a delicious and easy vegan weeknight dinner: these 30 minute vegan portobello fajitas.
We’ve made these two weeks in a row now and I am in love.
How to make portobello fajitas:
I love fajitas, but I don’t want to stand around babying a skillet for 20-40 minutes if I don’t have to.
I bypassed the stovetop altogether for this recipe and there’s no turning back!
The only work you have to do is chop up some veggies and the oven does the rest of the work for you.
Roasting your fajita veggies
Many recipes call for low and slow cook time, but I’m all about convenience.
If we roast these fajita veggies at 450 degrees then dinner is ready in less than 30 minutes.
It is an obvious choice for me!
This is one of the few recipes that I would willingly eat straight from the pan (tortillas are optional in my opinion).
I ate 1/3 of this recipe with avocado and no tortilla and I could have eaten the whole pan it was so delicious!
The flavor from the spices gives it that smoky fajita taste and the mushrooms are indescribably delicious when roasted this way.
Robbie and I were eating mushrooms straight from the pan.
This would be a great dinner to make for Taco Tuesday!
Don’t forget to tag me in your recipe creations on Instagram, follow me @buildyourbite and #buildyourbite when you make one of my recipes!
More vegan mexican recipes you might like
- Ultimate Vegan Quesadillas
- The Best Guacamole Recipe
- Enchilada Tofu Burrito Bowls
- Easy Vegan Taco Bake
- 5 Minute Homemade Refried Beans
Pin these 30 Minute Vegan Portobello Fajitas:
Vegan portobello Fajitas Recipe:
30 Minute Vegan Portobello Fajitas

These 30 minute vegan portobello fajitas have all of the flavor of slow roasting without the time!
Ingredients
- 4 large portobello mushroom caps, sliced (16 oz if you buy pre sliced)
- 1 large onion, sliced
- 1 bell pepper, sliced
- 1 teaspoon salt
- 1/2 teaspoon pepper
- 1 teaspoon cumin
- 1 teaspoon chili powder
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1/4 teaspoon paprika
- 1/4 cup olive oil
- Juice of 1/2 lime
- 8 yellow corn tortillas, for serving
- sliced avocado, for serving
Instructions
- Preheat oven to 450 degrees
- Add mushrooms, onion, and bell pepper to a large glass casserole dish
- Add salt, pepper, cumin, chili powder, garlic powder, onion powder, paprika and olive oil
- Use your hands to mix until vegetables are evenly coated with oil and spices
- Bake at 450 degrees for 15 minutes, then remove from oven to stir
- Bake an additional 5-10 minutes, until roasted and caramelized
- Once vegetables are done roasting, squeeze half of a lime over them and stir
- Serve on corn tortillas with sliced avocado
Nutrition Information:
Yield:
4Serving Size:
1Amount Per Serving: Calories: 359Total Fat: 21gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 17gCholesterol: 0mgSodium: 617mgCarbohydrates: 42gFiber: 8gSugar: 12gProtein: 6g
Ellie
Wednesday 9th of October 2019
This looks so good! I’m in love with your site, by the way.
Joy Shull
Thursday 10th of October 2019
Thanks so much Ellie, you made my day!