Sheet Pan Steak Fajitas

Name: Sheet Pan Steak Fajitas
Prep time: 25 min
Cook time: 20 min
Total time: 50 min
Ingredients: 1 lb flank steak (sliced against the grain into 1/2 inch strips); 2 tsp chili powder; 1 tsp ground cumin; 1 tsp garlic powder; 1 tsp paprika; 1/2 tsp salt; 1/4 tsp black pepper; 1/4 cup olive oil; 1 tsp minced garlic; 1 onion (thinly sliced (no more than 1/4 inch thick)); 1 red bell pepper (thinly sliced (1/4 inch thick)); 1 yellow bell pepper ( thinly sliced (1/4 inch thick)); 1 green bell pepper ( thinly sliced (1/4 inch thick)); 8 flour or corn tortillas; lime wedges and chopped fresh cilantro for topping onto fajitas

by Jennifer Lee on Jan 12, 2017 (updated Jul 8, 2022)

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Sheet Pan Steak Fajitas is a fun and easy dinner ready in less than an hour. Everything is cooked in the oven on one sheet pan for an easy weeknight meal. You can also swap steak for chicken or shrimp.

I love fajitas but I rarely ever make them at home. It always seems like a lot of work, but it’s really not. Especially if you cook this sheet pan version.

What I love about this way of making fajitas is that everything cooks together in the oven. This means you can make a big batch and you don’t have to hover over the stove cooking all of the ingredients in a skillet.

Ingredients

Flank steak sliced against the grain into strips
Homemade fajita seasoning: chili powder, cumin, garlic powder, paprika, salt, and pepper
Olive oil
Minced garlic cloves
Thinly sliced onion
Thinly sliced bell peppers – I use yellow, green, and red bell peppers.
Flour tortillas or corn tortillas

How to Make Fajita Seasoning Mix

The ingredient list might look long for this recipe, but some of the ingredients are for the simple Fajita spice mix. The seasoning gives the fajitas so much flavor – just mix up all the spices in a small bowl.

If you are short on time, you can use a packet of fajita seasoning instead of making it. You will need about two tablespoons.

How to Make Sheet Pan Fajitas

Thinly slice the flank steak against the grain. This will ensure it’s nice and tender once it’s cooked

Place the steak in a large bowl with thinly sliced onions and bell peppers. For the peppers, I like to use several different colors but you can pick your favorite.

Coat the meat and peppers with olive oil and add minced garlic. Toss to coat everything evenly in the oil and then sprinkle the spice mix and toss again.

I use a 2/3 size sheet pan, which is larger than a standard cookie sheet which is usually ½. If you don’t have the 2/3 size you can use two smaller ones. Line your pan with tin foil.

Spread the steak and vegetables in an even layer on the sheet pan. Cook the fajitas for 12 to 20 minutes or until the meat is cooked to your liking. I think flank steak is best cooked medium-rare to medium.

How to Warm the Tortillas

You can serve your fajitas with corn or flour tortillas. I like to warm them up and there are two ways to do it:

You can wrap the tortillas in foil and place them in the corner of the sheet pan during the last five minutes of the cook time.

If you like tortillas with char marks, you can warm them on the stove if you have a gas range. Just place one tortilla over the flame and once it’s toasted and charred in spots turn it over and char it on the other side. If you have an electric stove this method won’t work.

What other cut of steak can you use?

I’ve only tested this recipe with flank steak but readers have used sirloin and strip steak. Skirt steak is similar to flank steak and would be a good sub. If you want to try a different cut, be sure to slice it thin (1/2″ slices) and you may need to adjust the cook time.

Can you marinate the steak?

Yes, you can marinate it ahead of time. Just rub the steak with the fajita spices and then place it in a large Ziplock bag or airtight container. Marinate the steak overnight.

What can you serve with beef fajitas?

I like to serve the steak fajitas with lime wedges and chopped cilantro. Feel free to add other toppings like sour cream, salsa, guacamole, and cheese.

I love how colorful this came out and how all of it cooks at the same time with little fuss. This recipe is one I’ll definitely be making often.

I’ve also made chicken and cauliflower versions if you want to check them out. Or try some of my other sheet pan dinner recipes:

More Sheet Pan Recipes

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If you like steak you might like to try my garlic butter steak bites, too.

Main dishes Recipes Sheet Pan