Sheet Pan Veggie Fajitas in Oven

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Come and get ’em! This recipe for fajita veggies in oven has TONS of veggies and is knock-your-socks-off tasty. Made on a sheet pan and loaded with veggies, your family will be thrilled when they see these veggie fajitas on the menu.

Some people might pick one vegetable for their fajitas (or sheet pan tacos)…but we’re doing LOTS of veggies in this recipe. Perfectly seasoned portabello mushrooms, zucchini, bell peppers and onions fill the tortillas and are topped with the most perfect guacamole and a creamy cilantro mayo sauce.

Are you hungry yet?

BONUS…this recipe of fajita veggies in oven is suitable for anyone following a special diet like gluten free, dairy free, Paleo, or Whole 30.

Tools Needed to Make Sheet Pan Veggie Fajitas

• Sheet pan or two – Depending on their size (I recommend measuring your oven and either finding one big sheet pan to fit the oven or getting two that will fit side by side).
• Guacamole bowl – This “it’s five o’guac somewhere” bowl makes me laugh, and makes me want guacamole) – optional for this sheet pan veggies.
• Taco seasoning – 3 ingredients to a homemade mix – here’s the fajita seasoning recipe

Ingredients Needed to Make Sheet Pan Veggies

The beauty of this oven baked fajita veggies recipe is that you can make it with whatever veggies you have on hand.

This specific recipe is made with:

• Portabello mushrooms – Gives the dish its tasty and savory, with an umami flavor.
• Bell peppers – Can’t have fajitas without bell peppers!
• Onions – It adds robust flavor to the dish.
• Zucchini – Because it’s zucchini season and I have zucchini coming out of my ears.

How to make Sheet Pan Veggie Fajitas in Oven

Step 1: Make the taco seasoning Mix

If you just want to make just enough seasoning mix for this recipe: The amounts of each of the three spices are listed in the recipe card at the bottom of the page.

If you want to make a big batch to use later: Here’s the homemade taco seasoning recipe. No need to buy the store-bought packets, they’re loaded with extra ingredients and preservatives.

Step 2: Chop your veggies

We want the veggies to cook and be done at the same time, so we want to think strategically about the size we chop each of them. See the recipe card for size recommendations.

The sizes I recommend are based on NOT wanting mushy veggies. If you like softer vegetables, consider chopping them smaller, or cooking them longer.

Step 3: Toss the veggies in the oil and seasoning

Put all the veggies in a bowl and pour the oil and seasoning mix in. Toss the veggies to coat them.

Step 4: Bake the veggies

Bake your veggies in your 375 (F) oven for about 15-20 minutes, or until they’re cooked how you like them.

Step 5: Make the extras

What goes with sheet pan veggies? Well, I highly recommend some tortillas (these homemade tortillas are awesome), guacamole, and a simple creamy lime cilantro mayo.

Step 6: Serve The Fajitas & Enjoy

FAQ & Recipe Tips

Can I Make these ahead of time?

Yep! Make the Sheet Pan Veggie Fajitas ahead of time, and store them in the fridge until you want to serve them. You can also make the Sheet Pan Veggie Fajitas and eat them throughout the week in your lunches. Your choice!

Should fajita veggies be soft?

I like my veggies to have some texture to them (other than mush). Soft? Sure. Mushy? No thanks. This is an area you have total control over when you cook them at home. Cook them longer for softer veggies, cook them less for firmer veggies.

How do you cut vegetables for fajitas?

When you make fajitas at home, cut them how you like them. There’s no hard-and-fast rule here. In restaurants you’ll typically see peppers and onions cut into strips.

What are fajita veggies made of?

Fajita veggies usually consist of bell peppers, onions, mushrooms, salt, and pepper BUT you can make them with whatever veggies you prefer! This is the beauty of cooking it yourself and as I’ve said earlier—if you’re going to cook dinner for you and your family, you might as well make it just how YOU like it, with YOUR favorite vegetables.

Related Recipes

More Sheet Pan Meals to Try this Week

• Sirloin Steak Sheet Pan Fajitas
• 11 Mouthwatering Sheet Pan Dinners
• 24 Gluten Free & Dairy Free Sheet Pan Dinners

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