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Savory Grilled Steak Fajita Foil Packets

grilled steak fajita foil packets - featured image

A quick and easy recipe for tender, juicy steak fajitas cooked in foil packets on the grill, infused with bold spices and vibrant vegetables. Perfect for fuss-free weeknight dinners or outdoor cooking.

Ingredients

Scale
  • 1 pound flank steak or skirt steak, thinly sliced against the grain
  • 1 red bell pepper, sliced into thin strips
  • 1 green bell pepper, sliced into thin strips
  • 1 medium yellow onion, thinly sliced
  • 2 tablespoons olive oil
  • Juice of 1 lime
  • 2 cloves garlic, minced
  • 1 teaspoon chili powder
  • 1/2 teaspoon smoked paprika
  • 1/2 teaspoon ground cumin
  • 1/4 teaspoon cayenne pepper (optional)
  • Salt and black pepper, to taste
  • A handful fresh cilantro, chopped (optional)
  • Flour or corn tortillas, warmed, for serving

Instructions

  1. Thinly slice 1 pound of flank steak against the grain into strips about 1/4-inch thick. Slice 1 red and 1 green bell pepper and 1 medium yellow onion into thin strips.
  2. In a large mixing bowl, whisk together 2 tablespoons olive oil, juice of 1 lime, 2 minced garlic cloves, 1 teaspoon chili powder, 1/2 teaspoon smoked paprika, 1/2 teaspoon cumin, 1/4 teaspoon cayenne pepper (optional), salt, and black pepper to taste.
  3. Add the sliced steak, bell peppers, and onion to the marinade. Toss thoroughly to coat. Let sit for at least 15 minutes, or up to 30 minutes for deeper flavor.
  4. Tear off 4 large sheets of heavy-duty aluminum foil (about 12×12 inches each). Divide the steak and veggie mixture evenly among the foil sheets, placing it in the center of each. Fold the foil over the filling and crimp edges tightly to seal packets.
  5. Preheat grill to medium-high heat (about 400°F). Place foil packets on the grill and cook for 12-15 minutes, flipping once halfway through.
  6. Carefully open one packet to check doneness. If needed, reseal and grill a few minutes longer.
  7. Sprinkle chopped fresh cilantro over the packets once opened. Serve immediately with warmed tortillas and optional toppings like sour cream, guacamole, or shredded cheese.

Notes

Chill steak briefly before slicing for easier thin strips. Double-fold foil edges tightly to prevent tearing and flare-ups. Let packets rest a few minutes after grilling to redistribute juices. Avoid poking holes in foil to keep fajitas juicy. For oven cooking, bake packets at 400°F for 20-25 minutes.

Nutrition

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