Easy recipe for fajita veggies, just like Chipotle! Bell peppers and onions make a simple, flavorful, and healthy Mexican side dish that’s ready in minutes! Serve with your favorite Mexican recipes, such as my spicy black beans and cilantro lime rice.

As much as we love Mexican food in my house (hence the reason why slow cooker chicken fajitas and slow cooker Mexican potato Soup and spinach and chicken enchiladas are regulars on my meal plans)…
And as much as we love vegetables (quick pickled red onions and cilantro lime coleslaw and black bean and corn salsa tacos are some of our favorites!)…
And as much as I love Mexican-style rice (coconut lime rice and Spanish rice and cilantro lime rice)…
I have really struggled with combing the two. For some reason, I always drew a blank for “Mexican vegetables,” until one day I was at Chipotle and had them put fajita vegetables on my burrito bowl.
DING! The light went off – why not make fajita vegetables as a regular side dish when we have Mexican food?
We’ve been doing that ever since, and they taste just like Chipotle!
Plus, I’ve found a variety of ways to make fajita veggies really fast, including using the Instant Pot, the slow cooker, the oven, and the stove top!
I’ll give you the step-by-step for the Instant Pot here, but keep scrolling for other methods to make fajita vegetables!
Instant Pot Fajita Veggies

I love this recipe for fajita vegetables because it’s super simple and straightforward. Plus it’s an easy recipe to teach the kids to make (which means less work for you!).
These fajita veggies are:
- packed with flavor
- naturally vegan and gluten-free
- make great leftovers (store in the refrigerator, in an airtight container)
What are Fajita Veggies? Simple Ingredients:
The list of ingredients for fajita vegetables is pretty straightforward:
Note: I like using white or yellow onions, but red onion is really good too!
Also, feel free to add other Mexican spices like oregano, Mexican oregano, paprika, chili powder, cumin, or onion powder. We just prefer the simple combination of salt, pepper, and garlic powder.
How to Make Fajita Vegetables Recipe (Instant Pot)
Step 1: Slice your vegetables as desired. Some like them thick strips, some like thin strips, some like diced, some like chunks – cut them however you prefer.

Step 2: Pour oil in the inner pot of the Instant Pot. Turn the Instant Pot to sauté and heat oil over medium heat.
Step 3: Place the vegetable into the hot oil and cook, making sure to stir every few minutes, until the onions have some color and are just turning soft, about 10-15 minutes.

Other Cooking Methods for Fajita Vegetables
How to Make Fajita Veggies in the Skillet
One benefit to cooking fajita vegetables on the stove is you can control the level of heat, which affects how firm your vegetables will be at the end. I love using my cast-iron pan for the stovetop method.
- If you want firmer vegetables, cook on a higher heat for 5-7 minutes.
- If you want softer, more charred vegetables, cook on a medium-high heat for 10-15 minutes.
How to Make Fajita Veggies in the Slow Cooker
- Layer in veggies
- Season with spices and add olive oil
- Stir with a large wooden spoon
- Cook on Low for 4-6 hours or High for 2 hours
- Use a glass measuring cup to carefully to scoop out any excess liquid
How to Make Fajita Veggies in the Oven
- Set oven to 400F
- Toss veggies w/oil and spices in big bowl
- Spread veggies on baking sheet or in baking dish
- Roast 8-12 min
What to do with your fajita vegetables? Add them to…
Burritos: homemade flour tortillas + Instant Pot Spanish rice + slow cooker beans + ground taco meat + salsa
Bowls: Cilantro lime rice + spicy citrus black beans + grilled chicken + easy guacamole + mango salsa
Tacos: homemade corn tortillas + slow cooker carnitas + creamy coleslaw + green salsa
Nachos: tortilla chips (or roasted potatoes) + ground taco meat + refried beans + sour cream (or lime crema)+ shredded cheese
Quesadillas: tortillas + grilled steak + cheese, with all your favorite toppings on top!
FAQs for Vegetable Fajitas Recipe
I like to cut my vegetables into strips that are just over ¼” thick. This makes sure they don’t cook into nothing, but they’re also not so thick that there’s big chunks of vegetables in my tacos or burritos.
Specifically, how to cut bell peppers:
cut off top, bottom, cut slit down from top to bottom. Cut membranes away, slice into strips. This method is fastest and creates least amount of waste – just the pepper stem!
Chipotle uses veggies like peppers and onions, but I like to include mushrooms at home (sometimes) just to offer the family a variety of options. The kids aren’t huge fans of mushrooms, but they’ll eat them when they’re cooked with other fajita veggies!
Fajita veggies, of course! Beyond that, it’s a combination of traditional toppings like guacamole, sour cream, shredded cheese, pico de gallo, lettuce, etc.

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Easy recipe for fajita veggies, just like Chipotle! Bell peppers and onions make a simple, flavorful, and healthy Mexican side dish that’s ready in minutes! Serve with your favorite Mexican recipes, such as my spicy black beans and cilantro lime rice.
- Prep Time: 10 mins
- Cook Time: 10 mins
- Total Time: 20 minutes
- Yield: 4 1x
- Category: Sides
- Method: Instant Pot
- Cuisine: Mexican
Ingredients
- 4 onions, sliced into strips
- 4 large bell peppers (any color), sliced
- 1 small package mushrooms (optional)
- 1 1/2 Tbsp olive oil
- 1 tsp garlic powder
- salt + pepper
Instructions
- Slice your vegetables as desired. Some like them thick strips, some like thin strips, some like diced, some like chunks – cut them however you prefer.
- Pour oil in the inner pot of the Instant Pot. Turn the Instant Pot to sauté and heat oil over medium heat.
- Place the vegetable into the hot oil and cook, making sure to stir every few minutes, until the onions have some color and are just turning soft, about 10-15 minutes.
Notes
- I like using white or yellow onions, but red onion is really good too!
- Also, feel free to add other Mexican spices like oregano, Mexican oregano, paprika, chili powder, cumin, or onion powder. We just prefer the simple combination of salt, pepper, and garlic powder.
Nutrition
- Serving Size: 1/4 cup
- Calories: 25
Keywords: Instant Pot Fajita Veggies
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