Oven Fajitas with Veggies

By Alexandra Caspero on February 25, 2024
All the flavor of fajitas, with minimal effort!
Serves 4

Oven Fajitas with Veggies! Making these veggie fajitas in the oven is such a simple meal. Throw everything in together, and dinner is ready in just 30 minutes. Customize them however you like.

These oven fajitas are so incredibly yummy (and easy!) that they’ve become my go-to recipe just about weekly.

I first created these veggie fajitas a few years ago when I was pregnant and didn’t want to spend too much time on my feet and, therefore, in the kitchen.

These oven fajitas are just as delicious as regular fajitas, but with a fraction of the effort! Toss your sliced veggies with oil and seasonings, then roast until tender!

Serve with your favorite toppings and enjoy. See below for tips and more details about making these oven fajitas, or scroll down to the recipe card for the full ingredient list and directions.

Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

Oven Fajitas Ingredient Notes

  • Peppers: As the base of these veggie fajitas are peppers and onions, I use quite a few peppers for best results. Not only does this provide a lot of color, but a balance of sweetness as well.
  • Onion: I prefer sweet or white onion for fajitas, but other onions will work, including red onion.
  • Spices: The combination of dried spices makes these taste like fajitas! For spicier fajitas, add in more cayenne pepper or add in chipotle powder.
  • Tortillas: I like flour tortillas for this recipe, but corn tortillas will also work for a gluten-free version.
  • Toppings: Any toppings work for this! I prefer chopped cilantro, sour cream, and guacamole
Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

How to Make Oven Fajitas

Prep the Veggies

Preheat the oven, then prep the veggies. Slice your peppers and onions, then toss with oil and spices, making sure that the veggies are well coated with the seasonings.

Roast

Spread in a single layer, place in the oven and roast until very tender, tossing halfway through.

Serve

Warm tortillas, then add in the veggie fajitas from the oven and serve with your favorite toppings.

Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

Variations and Substitutions

Fajita peppers can easily be the cornerstone of most of my meals. I love them wrapped up in a soft tortilla, sometimes with beans, sometimes with scrambled eggs and hot sauce, and sometimes with crumbled taco tofu. 

If you like the flavor of fajitas, then I recommend making a double batch of these vegetables. Serve them first as these oven fajitas, then tuck any leftovers into my fajita enchiladas.

This recipe is really customizable. If you’ve got any protein that you want to serve with, add it to the pan before cooking. I often add a can of black beans for 5-10 minutes before pulling the veggies out of the oven to warm through.

Perhaps the best thing about this recipe is that they were made to feed a crowd. Slice all the vegetables ahead of time, then pop in the oven whenever you are ready. Ta-da. That’s it! Dinner is served.

Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

More Mexican-Inspired Recipes

Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

If you try this recipe, let me know! Leave a comment, rate it, and tag your Instagram photos with #delishknowledge . I absolutely love seeing your creations. Happy cooking! 

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Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

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Oven Roasted Fajitas! These Veggie Fajitas Are Such A Simple Meal. Throw Everything In The Oven And Dinner Is Ready In Just 30 Minutes. Customize Them However You Like 'Em. | Www.delishknowledge.com

Oven Roasted Veggie Fajitas

  • Author: Alex Caspero
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 810 fajitas 1x
  • Category: dinner, main, entree
  • Method: oven
  • Cuisine: Mexican
  • Diet: Vegan

Description

Oven Roasted Fajitas! These veggie fajitas are such a simple meal. Throw everything in the oven and dinner is ready in just 30 minutes. Customize them however you like ’em. 


  • Author: Alex Caspero
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 810 fajitas 1x
  • Category: dinner, main, entree
  • Method: oven
  • Cuisine: Mexican
  • Diet: Vegan
  • Author: Alex Caspero
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 810 fajitas 1x
  • Category: dinner, main, entree
  • Method: oven
  • Cuisine: Mexican
  • Diet: Vegan
Scale

Ingredients

  • 2 red bell peppers, sliced thin
  • 2 green bell peppers, sliced thin
  • 1 orange bell pepper, sliced thin
  • 1 yellow bell pepper, sliced thin
  • 1 onion (red or yellow), sliced into thin strips
  • 1 1/2 tablespoons oil
  • 2 teaspoons chili powder
  • 1 teaspoon smoked paprika
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon garlic powder
  • 1 teaspoon cumin
  • 1/4 teaspoon cayenne pepper
  • 1/4 teaspoon cane sugar (optional to balance the spice)
  • 1/23/4 teaspoon kosher salt
  • 1/2 cup chopped fresh cilantro
  • Tortillas, for serving (I got about 8-10 fajitas with this recipe, depending on how much you fill them)
  • Toppings of choice

Instructions

  1. Preheat the oven to 425 degrees F.
  2. Place the peppers and onions in a large bowl and toss with the oil and spices. Toss well to combine, trying to coat the peppers with all of the spices.
  3. Place mixture in a single layer on a baking sheet and roast for 25-30 minutes, until tender. Check on the mixture around 20 minutes, making sure they don’t burn.  I love these with a bit of sour cream (vegan or regular) and a dollop of guacamole.
  4. Remove from the oven and divide among tortillas. Top as you’d like! If you want a heartier meal, stir in a cup of black beans right after the peppers come out of the oven.

did you make this?

Tag @delishknowledge on Instagram and hashtag it #delishknowledge

This recipe was first posted in 2017 and updated in 2024.

Meet Alex Caspero

Alex Caspero is a Registered Dietitian, New York Times Bestselling Chef, and mom of two. She aims to cut through the nutrition noise by providing real-life, nourishing tips for body and mind. Learn more about Alex.

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    1. Terry
      May 1, 2021 AT 10:57 am

      Can I make ahead and reheat in the oven in the same pan.






      1. Alex
        May 2, 2021 AT 4:05 am

        Yes, that should work! I would cover in foil as it reheats so the peppers “steam” and not dry out as they are warmed.

    2. Holly Barrier
      June 5, 2020 AT 5:48 pm

      Made this last night. It was super easy and pretty yummy, too. We arent chili seasoning fans so we used less of the spices. Still, we liked it so much, we are making it tonight, too! Thanks for making it so easy!






      1. Alex
        June 6, 2020 AT 5:50 am

        So glad you liked it! Thanks Holly!

    3. Christine
      February 23, 2019 AT 5:53 pm

      What a great idea to do this in the oven! Loved it!






    4. Kristen
      October 25, 2017 AT 12:00 pm

      I made this for dinner last night. My husband really liked the flavors. We’ll be making this again!!!






      1. Alex
        October 25, 2017 AT 6:05 pm

        So glad to hear- thanks for the comment!

    5. Connie
      May 15, 2017 AT 2:14 pm

      Alex, I roasted these pepper and onions last night. They smelled great while cooking, and they were fantastic with sour cream, enchilada sauce, greens, a little fish, some beluga lentils, cheese, and of course some cilantro. Wonderful!! They are so easy to make, and so versatile!






      1. Alex
        May 17, 2017 AT 3:11 am

        Awesome Connie! Glad you liked them!

    6. Daisy
      May 8, 2017 AT 7:08 pm

      How many calories a serving?

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