Name: Vegetarian Fajitas Recipe
Prep time: 15 min
Cook time: 6 min
Total time: 21 min
Cuisine: Mexican
Ingredients: 1 teaspoon chili powder; 1 teaspoon ground cumin; 1 teaspoon smoked paprika; 1/2 teaspoon garlic powder; 1/2 teaspoon onion powder; 3/4 teaspoon salt; 1/4 teaspoon ground black pepper; Tiny pinch cayenne pepper, optional; 2-3 tablespoons olive oil; 1 large red bell pepper, seeded and sliced; 1 large green bell pepper, seeded and sliced; 1 large yellow bell pepper, seeded and sliced; 1 medium red onion, sliced; 8 ounce package cremini or button mushrooms, sliced; Lime wedges; Corn or flour tortillas; Guacamole or sliced avocado; Pico de gallo or other salsa; Black beans; Vegan sour cream; Shreddable vegan mozzarella

Jump to Recipe· 4.6 from 31 reviews

If you’re looking for a vibrant, flavorful dish that’s quick to make and packs a punch of color and nutrition, you’re absolutely going to fall in love with this Vegetarian Fajitas Recipe. I’m talking about juicy bell peppers, tender mushrooms, and a homemade seasoning blend that brings it all to life — it’s a fan-freaking-tastic way to enjoy fajitas without the meat, and you’re going to want to make it again and again.

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Why This Recipe Works

Perfectly Balanced Seasoning: The homemade spice mix hits smoky, spicy, and savory notes that elevate simple veggies.
Quick and Easy Cooking: From prep to plate in about 20 minutes—ideal for busy weeknights.
Versatile Ingredients: Uses common veggies you can swap or adjust depending on what you have on hand.
Always Colorful and Satisfying: Bright peppers and juicy mushrooms deliver both texture and eye appeal.

Vegetarian Fajitas, easy veggie fajitas, healthy fajita recipe, quick vegetarian dinner, colorful veggie fajitas - The image shows a close-up of a black pan filled with a colorful mix of cooked vegetables, including long slices of red, green, and yellow bell peppers, as well as small pieces of browned mushrooms and translucent cooked onions. A white spatula is partially visible on the left side, lifting some of the vegetable mixture. The vegetables appear soft and well cooked, with varied textures from the tender onions and mushrooms to the slightly firm bell peppers. The background is out of focus but shows more of the dark surface of the pan. photo taken with an iphone --ar 2:3 --v 7

Ingredients & Why They Work

Each ingredient has a role here, lending flavor or texture to create those irresistible fajita vibes. Plus, a few pro tips on what to pick and how to prep make your life easier and tastier.

Vegetarian Fajitas, easy veggie fajitas, healthy fajita recipe, quick vegetarian dinner, colorful veggie fajitas - Flat lay of vibrant red, green, and yellow bell peppers sliced into long strips, glossy cremini mushrooms with rich brown caps and smooth texture, thinly sliced red onion rings showing their deep purple and white layers, bright green lime wedges with juicy segments visible, fresh cilantro sprigs with delicate leaves, ripe avocado halves with creamy green flesh, and a small pile of colorful chili powder, ground cumin, and smoked paprika powders in warm red and orange hues artfully scattered, placed on white marbled surface, photo taken with an iphone --ar 2:3 --v 7

Chili Powder: Adds warmth and mild heat; choose a good quality one for best flavor.
Ground Cumin: That earthy, smoky aroma is essential in fajita seasoning.
Smoked Paprika: Brings a subtle smoky depth without needing a grill.
Garlic and Onion Powder: Instant flavor boosters that meld beautifully with fresh veggies.
Salt and Black Pepper: Basic but vital to bring out all the other flavors.
Cayenne Pepper (Optional): Use sparingly if you want a little kick without overpowering.
Olive Oil: Helps the veggies cook evenly and caramelize lightly; don’t skip unless going oil-free.
Bell Peppers (Red, Green & Yellow): Crisp, sweet, and vibrant—these are the star veggies providing color and crunch.
Red Onion: Adds a mild sweetness and a bit of bite that pairs perfectly.
Mushrooms (Cremini or Button): Their meaty texture rounds out this vegetarian version wonderfully.

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Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Tweak to Your Taste

I love how flexible this Vegetarian Fajitas Recipe is — you can make it your own by swapping veggies, playing with heat levels, or even adding protein alternatives. Don’t hesitate to experiment and find your perfect combo.

Spicy Version: I sometimes add extra cayenne or a dash of hot sauce right at the end for those who like things fiery.
Vegan Chicken Fajitas: Swap mushrooms with your favorite vegan chicken strips like Gardein for a protein-packed twist.
Oil-Free Cooking: I’ve done this by sautéing with a bit of water instead of oil—flavor’s still great, just a bit lighter.
Seasonal Veg Swap: During winter, I like adding sliced zucchini or even some baby corn for texture variety.

Step-by-Step: How I Make Vegetarian Fajitas Recipe

Step 1: Mix Your Magic Seasoning

Start by whisking together chili powder, cumin, smoked paprika, garlic powder, onion powder, salt, black pepper, and a tiny pinch of cayenne if you want heat. I like to make a bit extra and keep it in a jar—super handy for future fajitas or taco nights!

Step 2: Heat Things Up

Heat olive oil over medium-high in a large cast iron pan—it gives a fantastic sear on the veggies. You’ll want the pan hot enough so the vegetables start to char but be sure not to burn them. Trust me, that slight charring adds to the flavor profile dramatically.

Step 3: Sizzle Your Veggies

Add your sliced bell peppers, red onion, and mushrooms to the pan. Stir frequently for about a minute to get everything evenly coated in that hot oil. You want the vegetables softened but still holding a slight crunch—this balance makes all the difference.

Step 4: Season and Finish Cooking

Sprinkle your seasoning mix over the veggies, then cook for about 5 more minutes, stirring often. The seasoning will marry with the veggies, and you’ll notice a lovely blackened look where the pan kisses the bell peppers and mushrooms. That’s the fajita magic in action.

Step 5: Serve It Up

Remove from heat and serve immediately—trust me, fajitas are best enjoyed hot! Pile your veggies onto warm flour or corn tortillas, add a squeeze of lime, and whatever toppings you love. It’s simple but bursting with flavor.

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Pro Tips for Making Vegetarian Fajitas Recipe

Cast Iron for Flavor: Using a cast iron pan helps develop the char that gives fajitas their signature taste.
Don’t Overcrowd the Pan: Give veggies enough space to sear instead of steam for those irresistible browned edges.
Prep Veggies Uniformly: Slice peppers, onions, and mushrooms in similar sizes so they cook evenly and finish together.
Serve Immediately: These fajitas taste best fresh; if you wait too long, the veggies lose that nice texture and vibrant color.

How to Serve Vegetarian Fajitas Recipe

Vegetarian Fajitas, easy veggie fajitas, healthy fajita recipe, quick vegetarian dinner, colorful veggie fajitas - Three soft white tortillas are open-faced and filled with layers of cooked vegetables including brown mushrooms, green and red bell pepper strips, and orange and yellow bell pepper strips, all mixed with small diced tomatoes and onions. Each tortilla has a dollop of white sour cream on one side, sprinkled with chopped green herbs. Lime wedges are placed beside the tortillas on a white marbled surface, which contrasts with the colorful vegetable layers. The tortillas have slight roasted brown spots, adding texture to the soft wraps. photo taken with an iphone --ar 2:3 --v 7

Garnishes

I usually keep it simple with fresh lime wedges to brighten every bite. Avocado or guacamole is a must for creaminess, and vegan sour cream adds a tangy finish. Sometimes I sprinkle shredded vegan mozzarella on top for a melty touch—so good!

Side Dishes

Black beans are my go-to side—they add protein and keep things hearty. Sometimes I throw together a quick pico de gallo or a side of Mexican rice to round out the meal. And don’t forget some crunchy tortilla chips to scoop up any leftovers.

Creative Ways to Present

For parties, I like setting up a fajita bar so everyone can customize their own. You can even serve the veggies on a big platter garnished with cilantro and lime slices—makes it look festive and inviting. Another fun idea: wrap the fajita filling in lettuce leaves for a fresh, low-carb option.

Make Ahead and Storage

Storing Leftovers

Leftover fajita veggies can be stored in an airtight container in the fridge for up to 3 days. Reheat gently on the stove or in the microwave, but watch the time so they don’t get soggy. I like to keep the tortillas and toppings separate until you’re ready to serve for the best texture.

Freezing

I’ve frozen the cooked fajita veggies before with decent results—just make sure they cool completely before storing in a freezer-safe bag. When thawing, reheat slowly so they don’t get mushy. Personally, I prefer to make them fresh, but freezing can be a handy backup plan.

Reheating

For the best flavor, I sauté leftovers in a hot pan with a splash of water or oil to bring back some crispness. Microwaving works too, but the veggies can turn a little softer. Warming the tortillas separately helps prevent them from getting soggy once filled.

FAQs

Can I use other vegetables in this Vegetarian Fajitas Recipe?

Absolutely! While bell peppers, onions, and mushrooms are classic, feel free to add zucchini, squash, or even thinly sliced carrots. Just make sure to slice them evenly for consistent cooking times.
Is this recipe gluten-free?

The fajita veggies themselves are naturally gluten-free, but be sure to choose corn tortillas to keep it gluten-free. Flour tortillas usually contain gluten, so check your packaging if unsure.
Can I make these fajitas oil-free?

Yes! Simply swap oil for a few tablespoons of water and cook the veggies over medium heat, stirring often to prevent sticking. The flavor will remain great, just a bit lighter.
How spicy is this Vegetarian Fajitas Recipe?

The base seasoning has a mild heat from chili powder and optional cayenne pepper—adjust the cayenne amount to suit your spice tolerance or omit it entirely for a milder dish.
Can I prepare the seasoning mix in advance?

Definitely. I often make a batch of the spice mix and keep it in a jar in my pantry. It saves time and makes for quick weekday meals whenever fajita cravings hit.

Final Thoughts

This Vegetarian Fajitas Recipe has become a staple in my kitchen because it delivers so much flavor with minimal fuss. Whether you’re a longtime vegetarian or just wanting a fresh, meatless meal, it’s incredibly satisfying and easily customizable. Give it a try—you might find it becomes one of your go-to quick dinners too. I promise, once you’ve nailed the seasoning and seasoning timing, you’ll be wowed by how delicious simple veggies can be.