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Air fryer beef fajitas with juicy seasoned steak, roasted bell peppers, sweet onions, warm flour tortillas, fresh cilantro, and lime wedges, served as an easy Tex Mex dinner.
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Air Fryer Beef Fajitas - Fast, Flavorful, and Weeknight-Friendly

Prep Time10 minutes
Cook Time12 minutes
Total Time22 minutes
Servings: 4 servings

Ingredients

  • 1 to 1.25 pounds flank or skirt steak, thinly sliced against the grain
  • 2 bell peppers (any colors), sliced into 1/2-inch strips
  • 1 medium red onion, sliced into 1/2-inch wedges
  • 2 tablespoons olive oil (divided)
  • 2 tablespoons fresh lime juice (plus extra wedges for serving)
  • 2 teaspoons chili powder
  • 1 teaspoon ground cumin
  • 1 teaspoon smoked paprika (or sweet paprika)
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • 1/2 teaspoon dried oregano
  • 1/2 to 1 teaspoon kosher salt, to taste
  • 1/2 teaspoon black pepper
  • 8 small flour or corn tortillas
  • Optional toppings: chopped cilantro, salsa, guacamole, sour cream, shredded cheese, pickled jalapeños

Instructions

  • Prep the steak: Pat the steak dry and slice it thinly against the grain. This is key for tenderness.
  • Mix the marinade: In a bowl, whisk 1 tablespoon olive oil, lime juice, chili powder, cumin, paprika, garlic powder, onion powder, oregano, salt, and pepper.
  • Marinate: Toss the sliced steak in the marinade until coated. Let it rest for 15–30 minutes at room temperature. If longer, refrigerate up to 2 hours, then bring to room temp before cooking.
  • Prep veggies: In a separate bowl, toss peppers and onions with the remaining 1 tablespoon olive oil and a pinch of salt and pepper.
  • Preheat the air fryer: Set to 400°F (200°C) for 3–5 minutes. A hot basket helps get that light char.
  • Cook the veggies: Add peppers and onions in an even layer. Air fry at 400°F for 7–9 minutes, shaking halfway, until crisp-tender with a few browned edges. Transfer to a bowl and cover to keep warm.
  • Cook the steak: Add the marinated steak to the basket in a single layer (work in batches if needed). Air fry at 400°F for 5–7 minutes, shaking or tossing once, until the edges are browned and the centers are just pink.
  • Combine: Return the cooked veggies to the basket with the steak. Air fry 1–2 minutes more to warm everything together and mingle the flavors.
  • Warm tortillas: Wrap tortillas in a damp paper towel and microwave 20–30 seconds, or wrap in foil and heat in a 300°F oven for 5–8 minutes.
  • Serve: Pile steak and veggies into tortillas. Finish with lime wedges and favorite toppings. Taste and adjust salt if needed.