Sheet Pan Steak Fajitas

These easy Sheet Pan Beef Fajitas made with flank steak, bell peppers, red onions, and our homemade fajita seasoning come together in no time and couldn't be more delicious.

In less than thirty minutes, you can have restaurant-quality fajitas on the table for a healthy, family-friendly dinner.

There is nothing I love more than an easy sheet pan dinner that has my whole family asking for seconds. These sheet pan steak fajitas are exactly that. The process from start to finish couldn't be easier.

Slice up some steak, bell peppers, and red onions. Add lime juice and fajita seasoning. Spread everything out on a sheet pan. Wait 15 minutes and dinner is done.

While the steak cooks, you can make some quick side dishes. Heat up some flour or corn tortillas. Warm up a can of refried beans or black beans. Slice up some avocados, cilantro, and lettuce. Grab a bag of shredded cheese, sour cream, and some store-bought pico de gallo or salsa. Build your own tacos or fajita bowls.

That's all you need for a meal that seriously tastes like it came from a restaurant.

Lay it all out on the table and let everyone build their own fajitas. It's fun, it's healthy, and it is always a crowd-pleaser!

One more idea for those looking for something a little untraditional. These steak fajitas can be used to make rice bowls (with regular or cauliflower rice), salads, quesadillas, burritos, and even taste amazing wrapped up in lettuce for a low carb treat.

Why You’ll Love Sheet Pan Steak Fajitas

• Great for meal prep: These oven steak fajitas can be prepared ahead of time to make for easy meal prep. Simply cut everything up, season with our homemade spice blend, and store in a Ziplock bag until you are ready to bake. Take it out and let it come to room temperature for a bit, spread out on a baking sheet before placing it in the oven for best results.
• Perfect for busy weeknights: There’s really nothing better than easy sheet pan steak fajitas for dinner! They’re perfect for busy weeknights and the entire family will love them.
• Easy clean-up: Making a sheet pan version of fajitas instead of using the stovetop means easy clean up.
• Prep to Table in 30 Minutes: You cannot beat being able to get it from prep to the dinner table in 30 minutes (even less time if you prepped it ahead of time!).

Ingredients and Substitutions

You’ll be glad to know that this recipe uses really simple ingredients. Of course, you can go all-out on the toppings to really customize the flavors.

• Lean flank steak: For fajitas, my go-to is flank steak. It's not only lean and tender but also affordable and simple to prepare. But don't worry if you prefer something else; skirt steak, sirloin, or rump steak are all fantastic alternatives for whipping up delicious fajitas.
• Fajita seasoning: Make your own fajita seasoning or use a mix you can get from grocery stores. I always make my own because it’s less expensive and I know exactly what’s in it (no preservatives or additives like MSG).
• Olive oil: I like the freshness of olive oil, but you can use avocado oil if you prefer.
• Lime: The fresh lime juice blends with the fajita seasoning and tenderizes the meat to make it super tender during the short marinade.
• Red onion: I love the sweetness that red onion brings to fajitas, but you can use any color of onions, such as a yellow onion or a white onion if you prefer.
• Bell peppers: Fajitas aren’t fajitas without the different colors of peppers! Mix it up and use a variety: red peppers, green peppers, yellow peppers, and even orange bell peppers.

How to Make Homemade Fajita Seasoning

Instead of buying store-bought fajita seasoning, make it at home using spices you already have in the pantry. Here is a basic fajita seasoning recipe that can be adjusted to make it more or less spicy.

This recipe makes more than you need for this recipe, but the extra can be stored for future use.

• 3 tbsp chili powder
• 1 tbsp ground cumin
• 1 tbsp paprika
• 1 tbsp garlic powder,
• 1.5 tsp onion powder
• 1.5 tsp kosher salt
• 3/4 tsp ground pepper

How to Make Sheet Pan Steak Fajitas

Follow these easy steps to make your own quick and easy beef fajitas.

1. Prepare steak and vegetables: Begin by cutting the flank steak into thin strips, and do the same with the peppers and onions.

2. Season and marinate: Mix the beef, red onion, and bell peppers with olive oil, lime juice, and fajita seasoning. Let it marinate for 15-30 minutes in a ziploc bag for an easy cleanup. If you're in a hurry, you can skip this step.

3. Spread fresh veggies and steak on a baking sheet: Preheat your oven to 425 degrees and prepare a baking sheet with cooking spray or aluminum foil. Arrange the steak and vegetables on it in a single layer.

4. Bake sheet pan fajitas: Cook everything in the oven for 10-12 minutes until the veggies are tender but still crisp. For extra char on the steak, broil it for the last 2 minutes. Note: If you prefer softer vegetables, put them in the oven 10 minutes before adding the steak.

Fajita Toppings

One of the things I love about fajitas is adding all my favorite toppings! Here are some basic fajita toppings:

• Cheese: Adding cheese to your steak fajitas brings a wonderful melt-in-your-mouth texture and a rich flavor. Go for shredded varieties like cheddar or Monterey Jack. They melt beautifully and complement the meat perfectly.
• Lettuce: Crisp lettuce adds a fresh crunch to every bite of your steak fajitas. Chop it into thin strips for an easy-to-eat option.
• Tomatoes: Juicy tomatoes are key for adding a burst of freshness and slight acidity that balances the savory flavors of the steak. Dice them up for a pop of color and sweetness in every bite.
• Sour Cream: A dollop of sour cream on your steak fajitas can do wonders! It introduces a cool, creamy contrast to the warm spices of the meat. Plus, it helps in blending all the flavors together smoothly.
• Jalapenos: For those who love a bit of heat, jalapenos are perfect. Slice them thinly and scatter over your fajitas for a spicy kick that elevates the dish to new levels of deliciousness.
• Avocado: Creamy avocado slices add a rich, buttery texture that pairs wonderfully with the robust flavors of steak. A squeeze of lime on top keeps them bright and green.
• Cilantro: Fresh cilantro sprinkled over your steak fajitas can add a burst of herbal brightness that cuts through the richness of the meat.
• Lime Juice: A splash of lime juice brings everything together. Its acidity brightens up the flavors, making each ingredient stand out even more.

What cut of beef is best for fajitas?

When making fajitas, I like flank steak since it is lean, stays tender, and is easy to find and work with. However, you can also use skirt steak, sirloin steak, or rump steak as well to make fajitas.

For all of these steak choices, make sure to slice it in thin strips and against the grain. This helps the muscle fibers to stay tender. You can also use more expensive cuts, really anything will work.

Traditionally, fajitas were made with "faja" steak, which refers to skirt steak, which comes from the belt or girdle of the cow. It was a dish made by Mexican ranchers on the border of Mexico and Texas.

What to serve with steak fajitas?

These fajitas are a meal on their own with some warm tortillas and toppings. However, around our home, the more toppings and side dishes the better. Here are some favorites:

• Start traditional with warmed flour tortillas, shredded lettuce, pico de gallo, limes, and shredded cheese.
• Kick things up a notch with some sliced avocado or guacamole.
• Add fiber to the meal with some quick refried beans or black beans. I like to top mine with some pico de gallo and melted cheese.
• For something light and fresh, consider making this Cucumber, Avocado, and Tomato Salad or Creamy Mexican Coleslaw.
• During summer months, I love serving this with some grilled corn or Mexican Street Corn Salad.

Can I add other veggies to the fajitas?

Many people like to kick up the veggies in this recipe or substitute in other vegetables if they can't eat bell peppers or onions.

The main thing to keep in mind when adding extra vegetables or swapping in vegetables is that you want something that cooks quickly. Some favorites include zucchini, summer squash, thinly sliced carrots, fresh corn, thinly sliced butternut squash, and cauliflower.

The other thing to remember is that you don't want to overcrowd the pan. You’ll want to use a large sheet pan, and if you are adding lots of extra veggies, you may need to use two make sure the meat and vegetables aren't piled up on the sheet pan. You want a single even layer for the best results.

Can I make these on the grill?

These fajitas work great on the gill. There are a few different options for preparation. The easiest is preparing the steak fajitas in the same way as the recipe below and then simply cooking them in a grill basket, grill sheet, or large piece of heavy duty foil on the grill. They will cook in about 7-10 minutes. 

Another option is to keep the steak whole, like you would for carne asada, and marinate it in the fajita spices and lime juice. Cook it whole to your liking and then thinly slice against the grain., The peppers and onions can also be grilled in larger pieces and then sliced before serving.

How to Store Leftovers

If you have any leftovers, which might be unlikely considering how amazing these fajitas taste, you can store them in the refrigerator for 3-4 days. They reheat easily, just toss them in a hot skillet on the stove with a little olive oil to heat them through.