Name: Sheet Pan Portabello Mushroom Fajitas
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: Mexican
Ingredients: 1/4 cup soy sauce; 2 Tbsp red wine vinegar; 3 Tbsp neutral oil (like canola or grapeseed) – divided; 1/2 tsp granulated garlic; 1/2 tsp ground cumin; 1/8 tsp crushed red pepper flakes; 2 portabello mushroom caps; 1 red bell pepper; 1 red onion; 8, 6 inch flour tortillas; for serving: diced tomatoes, diced avocado, fire-roasted corn, shredded cheese, sour cream, cilantro, lime wedges

Sheet Pan Portabello Mushroom Fajitas

These vegetarian portobello mushroom fajitas are bursting with flavor! The mushrooms are cooked on a sheet pan with the peppers and onions to speed things up so they’re a weeknight-friendly crowd-pleaser.

Author: Leanne Ray, MS, RDN
Prep Time: 20 minutes
Cook Time: 20 minutes
Total Time: 40 minutes
Yield: 4 servings 1x
Category: Mains
Method: Oven
Cuisine: Mexican
Diet: Vegetarian

Ingredients

Scale

1/4 cup soy sauce
2 Tbsp red wine vinegar
3 Tbsp neutral oil (like canola or grapeseed) – divided
1/2 tsp granulated garlic
1/2 tsp ground cumin
1/8 tsp crushed red pepper flakes
2 portabello mushroom caps
1 red bell pepper
1 red onion
8, 6 inch flour tortillas
for serving: diced tomatoes, diced avocado, fire-roasted corn, shredded cheese, sour cream, cilantro, lime wedges

Instructions

Preheat oven to 375 degrees.
Prepare a sheet pan with nonstick cooking spray.
Make the marinade by adding soy sauce, vinegar, 2 tablespoons of the oil and spices to a small jar. Cover tightly and shake until thoroughly combined.
Prep portabello mushrooms: remove stems, clean out the gills with a spoon, and wipe the top of the cap clean with a damp towel. Cut into 1/2″ slices and add to a medium bowl, then pour the marinade over the top and toss to coat. Let sit at least 10 minutes.
Meanwhile, slice bell pepper and red onion and add to sheet pan. Toss with the remaining tablespoon of oil and season with salt and pepper. Once mushrooms are done marinating, add to sheet pan. Transfer to oven and cook for 20 minutes.
To assemble, add mushrooms, bell peppers and onions to a tortilla and add your favorite toppings.

Equipment

chef’s knife

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sheet pan

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Notes

The equipment section above includes affiliate links to things I use often in my kitchen and recommend.
Nutrition information was calculated for fajitas without toppings since this may vary.
I love keeping frozen fire-roasted corn on hand. It’s available at many grocery stores now!

Nutrition

Serving Size: 2 fajitas
Calories: 313 calories
Fat: 16 grams
Carbohydrates: 35 grams
Fiber: 4 grams
Protein: 7 grams

Keywords: vegan fajitas, portabello mushrooms, vegan mexican recipes, sheet pan meals

Find it online: https://leanneray.com/sheet-pan-portabello-mushroom-fajitas/