Sheet Pan Steak Fajitas are about to become your new favorite way to get dinner on the table! With sizzling steak, charred peppers, and caramelized onions, it is all the best Tex-Mex flavors. Put everything on a single pan, slide it into the oven, and dinner makes itself.
I love how the oven concentrates the flavors while creating irresistible caramelized edges on both the meat and vegetables. The natural sugars in the peppers and onions develop a subtle sweetness that goes perfectly with the savory, tender steak.
If you love the sizzling excitement of fajitas but hate dealing with multiple pans and complicated timing, this recipe is your answer. Everything cooks together on one sheet pan, making it a low-effort and straightforward meal, perfect for busy weeknights.
And it fits into virtually any eating style. Serve the sizzling meat and vegetables with tortillas for traditional fajitas, over rice for a hearty bowl, or atop crisp lettuce for a salad.
Let me show you the simple steps to make these delicious steak fajitas. I also share my best tips and tricks so you can make these sheet pan fajitas your new favorite weeknight dinner.
Looking for more sheet pan meals? Try my sheet pan Hawaiian chicken, sheet pan pierogies and kielbasa, or sheet pan Caribbean fish.
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Ingredient Notes
For exact amounts needed see the recipe card below
- Sirloin steak: I use sirloin because it’s both flavorful and budget-friendly. Make sure to slice it against the grain into thin strips about ¼ inch thick.
- Bell peppers: A rainbow of peppers (red, green, and orange) makes the dish look gorgeous, and each color has a slightly different flavor. Feel free to use whatever colors you have on hand, though!
- Onion
- Taco seasoning
- Vegetable oil
- Lime Juice: Fresh lime juice is best, but bottled works too if that’s what you have.
How to Make Sheet Pan Steak Fajitas
- Start by preheating your oven to 400 degrees F. Line a large baking sheet with parchment paper to make cleanup easier.
- Add the sliced steak, bell peppers, and onion to a large bowl.
- Add the taco seasoning packet, vegetable oil, and fresh lime juice to your bowl. Mix everything until all the meat and vegetables are evenly coated with the seasoning mixture.
- Spread everything out on your prepared sheet pan in a single layer.
- Put the pan in your preheated oven and bake for 20 minutes. This timing will give you medium-rare steak – adjust the cooking time if you prefer your meat more or less done.
Serving Ideas
Once done, serve your sheet pan steak fajitas immediately while they’re still hot and sizzling. I like to warm up some tortillas and let everyone build their own fajitas with their favorite toppings!
Wrap the tortillas in foil and pop them in the oven for the last few minutes of cooking. Then, let everyone pile on the tender steak strips and colorful peppers and onions.
Here are some of my favorite toppings to set out:
- Shredded Mexican cheese blend
- Fresh chopped cilantro
- Sliced avocado or guacamole
- Sour cream
- Pico de gallo or fresh salsa
- Lime wedges
- Hot sauce
Want to skip the tortillas? These fajitas are equally delicious served over rice, cauliflower rice (for a low-carb option), salad greens, or quinoa.
How to Store
These fajitas store beautifully for quick lunches during the week. Store the meat and vegetables in an airtight container in the refrigerator for up to 3 days.
When you’re ready to reheat, simply warm the fajita mixture in the microwave for 1-2 minutes or in a skillet over medium heat until heated through. The peppers and onions might release liquid during storage, so drain them before reheating.
If you’re meal prepping, you can portion out the fajita mixture into individual containers. I find these make fantastic lunch bowls when served over rice or greens. Just remember to pack any cold toppings like sour cream or guacamole separately.
Tips & Tricks
Be sure to check out the step by step instructions
- Slice your steak against the grain into thin strips about ¼ inch thick.
- Cut your peppers and onions into similar-sized strips so they cook evenly.
- For medium-rare steak, stick to the 20-minute cooking time. Add 2-3 minutes for medium doneness and decrease by 2-3 minutes for rare. Use a meat thermometer if you’re unsure. 135°F indicates medium-rare.
Reader Questions
While sirloin is my usual choice, you can also use flank steak, skirt steak, or ribeye. Remember to adjust cooking time slightly based on the thickness of your slices.
You can prep all the ingredients up to 24 hours in advance. Slice the vegetables, cut the meat, and store everything separately in the refrigerator. Wait to add the oil and seasoning until right before cooking.
Absolutely! Try adding a diced jalapeño or using a spicy taco seasoning. You can also sprinkle it with red pepper flakes or add hot sauce.
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Sheet Pan Steak Fajitas Recipe
Ingredients
- 1 pound sirloin sliced
- 3 bell peppers sliced
- 1 yellow onion sliced
- 1 packet taco seasoning 1 ounce
- 2 tablespoons vegetable oil
- Juice of 1 lime about two tablespoons
Instructions
- Preheat the oven to 400 degrees F and line a large baking sheet with parchment paper.
- Slice the steak against the grain, in strips that are about ¼ inch thick. Slice the bell peppers and onions. Juice the lime if you are using fresh lime juice.
- Add the sliced steak, bell peppers, onion, taco seasoning, oil, and lime juice to a large bowl. Stir until completely coated.1 pound sirloin, 3 bell peppers, 1 yellow onion, 1 packet taco seasoning , 2 tablespoons vegetable oil, Juice of 1 lime
- Pour the ingredients on the sheet pan and spread everything out in a single layer. Place in the oven and bake for 20 minutes.
- Serve on tortillas with your favorite toppings.
Notes
- Slice your steak against the grain into thin strips about ¼ inch thick.
- Any color peppers work. I like to use a variety of colors to make the fajitas colorful.
- Cut your peppers and onions into similar-sized strips so they cook evenly.
- For medium-rare steak, stick to the 20-minute cooking time. Add 2-3 minutes for medium doneness and decrease by 2-3 minutes for rare. Use a meat thermometer if you’re unsure. 135°F indicates medium-rare.
- If you want to make this spicier, add a diced jalapeño or use a spicy taco seasoning. You can also sprinkle it with red pepper flakes or serve with hot sauce.
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Nutrition Information
Nutrition facts are estimates.
This was absolutely delicious!!! And most of all the clean-up was so easy. Thank you for this wonderful idea. Love your recipes.
Anita S.