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Flavorful Grilled Steak Fajitas Recipe with Bell Peppers and Onions Perfect for Easy Weeknight Dinners

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Juicy charred steak combined with sweet caramelized onions and crisp bell peppers wrapped in warm tortillas, perfect for quick and satisfying weeknight dinners.

Ingredients

Scale
  • 1 ½ pounds flank steak or skirt steak
  • 3 tablespoons olive oil
  • 2 tablespoons fresh lime juice
  • 3 cloves garlic, minced
  • 1 teaspoon ground cumin
  • 1 teaspoon chili powder
  • ½ teaspoon smoked paprika (optional)
  • Salt and freshly ground black pepper, to taste
  • 2 large bell peppers (one red, one yellow), sliced into strips
  • 2 medium yellow onions, thinly sliced
  • 1 tablespoon butter or olive oil (for caramelizing onions)
  • Salt, to taste
  • 8–10 flour or corn tortillas, warmed
  • Fresh cilantro, chopped (for garnish)
  • Optional toppings: sour cream, shredded cheese, avocado slices, lime wedges

Instructions

  1. In a mixing bowl, whisk together olive oil, lime juice, minced garlic, cumin, chili powder, smoked paprika, salt, and black pepper.
  2. Place the steak in the bowl and coat it well with the marinade. Cover and let rest at room temperature for 30 minutes or refrigerate up to 2 hours.
  3. Heat butter or olive oil in a large skillet over medium heat. Add sliced onions with a pinch of salt and cook slowly for 15-20 minutes until caramelized.
  4. Slice bell peppers into thin strips and set aside.
  5. Preheat grill or grill pan to medium-high heat (about 400°F / 200°C).
  6. Grill the steak for 4-5 minutes per side for medium-rare, flipping once. Transfer to cutting board, tent with foil, and rest for 5-10 minutes.
  7. Grill bell pepper strips for 3-4 minutes until tender-crisp with slight char marks.
  8. Warm tortillas on the grill for 30 seconds each side.
  9. Assemble fajitas by layering grilled steak strips, caramelized onions, and bell peppers on tortillas. Garnish with cilantro and optional toppings.

Notes

Resting the steak after grilling is crucial for juicy tenderness. Slice steak against the grain for best texture. Caramelize onions low and slow to avoid bitterness. Use a meat thermometer to avoid overcooking. Corn tortillas make this recipe gluten-free; substitute butter with olive oil for dairy-free.

Nutrition

Keywords: steak fajitas, grilled steak, bell peppers, caramelized onions, easy dinner, weeknight meal, Mexican cuisine, fajitas recipe

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