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Vegetarian Sheet Pan Fajitas with Mushrooms and Peppers

March 6, 2021 by Emily Brees Leave a Comment - This post may contain affiliate links.

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Vegetarian Sheet Pan Fajitas are not only super easy, but packed with healthy veggies and super charged with spices. Topped with a quick and easy guacamole that always hits the spot. These are exactly what you need when you don’t have a ton of time to make dinner.

Vegetarian Sheet Pan Fajitas close up on plate

Sheet pan dinners. They’ve really become my friend lately.

Since starting a new job with a long commute, dinners have turned into quick bites or recipes easy enough for my husband to make before I get home from work without him texting me to ask where every single ingredient is.

With limited time, like most of us, sheet pan dinners are just perfect. Food52 has a delicious list of sheet pan recipes.

mushroom fajita on a brown plate

Vegetarian Sheet Pan Fajitas

These mushroom fajitas are really close to one of our favorite mushroom taco recipes from Oh She Glows. It’s one of the cookbooks I actually use for making recipes and there is a NEW cookbook which I totally need!

Fajita Seasoning

The seasonings in this recipe have pop. They’re smoky and savory and just everything you want to wrap up in a warm tortilla.

One of my favorite seasonings is Mexican oregano. It’s one of those must have pantry staples if you love tacos, fajitas, it pretty much just makes anything and everything with a Mexican flavor profile taste amazing.

Health Benefits of Herbs + Spices

I just finished reading a book by Dr. Uma Naidoo, director of nutritional and lifestyle psychiatry at Massachusetts General Hospital, called “This is Your Brain on Food” which takes a deep dive into the gut-brain connection and how what we eat influences how our brain feels! Lots of herbs and spices were consistently referenced and anti-inflammatory and great to alleviate depression and anxiety and even just the simple ailments like brain fog. Mexican oregano is one of those power spices!

You can listen to this interview with Dr. Naidoo to start to understanding the gut-brain connection and insights into how you can make small changes with big impact.

cooked mushrooms and peppers on a sheet pan

Fajita Toppings

Four simple toppings give these sheet pan fajitas their finishing touch.

  • a fast and easy guacamole that really hits the spot
  • a squeeze of fresh lime juice
  • a sprinkle of diced red onion for fresh crunch
  • and a pinch of fresh cilantro for herby goodness

PIN IT

Print
Vegetarian Sheet Pan Fajitas with Mushrooms and Peppers
Prep Time
5 mins
Cook Time
20 mins
 

Vegetarian Sheet Pan Fajitas are not only super easy, but packed with healthy veggies and super charged with spices. Topped with a quick and easy guacamole that always hits the spot.

Course: dinner, Lunch
Cuisine: Mexican
Keyword: fajitas, tacos, vegan tacos, Veggie tacos
Servings: 8 tacos
Calories: 273 kcal
Author: Emily Brees | OatandSesame
Ingredients
Fajita Seasoning
  • 2 tsp chili powder
  • 2 tsp ground cumin
  • 2 tsp Mexican oregano
  • 1 tsp smoked paprika
  • 1 tsp Kosher salt, more to taste
  • fresh ground black pepper, to taste
Fajitas
  • 4 Portabello mushrooms caps, sliced
  • 2 bell peppers (red and orange) cut into strips
  • 1 red onion, slices into wedges
  • 3 cloves garlic, sliced
  • 3 Tbs olive oil
  • 1/4 cup chopped fresh cilantro leaves
  • 2 limes (1 for juicing, 1 to serve as wedges)
  • 8 small corn or flour tortillas, warmed or toasted over open flame
  • 2 avocados
Instructions
  1. Preheat oven to 400° F. Lightly coat a large sheet pan with non-stick spray.

  2. In a small bowl, combine chili powder, cumin, Mexican oregano, paprika, 1 tsp salt and a few grinds of pepper.

  3. Spread sliced mushrooms, bell peppers, onion and garlic onto the prepared baking sheet. Sprinkle chili powder mixture over the veggies. Drizzle olive oil over the top and gently toss to coat the veggies.

  4. Place into oven and bake for 20 minutes.

  5. Before serving, squeeze the juice of 1 lime over entire sheet pan and toss.

  6. Serve immediately with tortillas. Top with cilantro, guacamole and extra diced red onion and lime wedges.

Notes

Quick Guacamole

  1. 2 avocados, mashed
  2. 1 lime, juiced (start with 1/2 lime, add more juice to taste)
  3. 1/2 tsp salt, add more to taste
Nutrition Facts
Vegetarian Sheet Pan Fajitas with Mushrooms and Peppers
Amount Per Serving (1 g)
Calories 273
* Percent Daily Values are based on a 2000 calorie diet.

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I'm Emily - a home cook, gardener and recipe creator located in Flagstaff, AZ.

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