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Steak, red bell pepper, yellow bell pepper, white onion tossed on a blackstone griddle with two spatulas.
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Steak Fajitas on a Blackstone Griddle

Quick, flavorful steak fajitas made right on the Blackstone griddle! Start by cooking bell peppers and onions, then sear pre-sliced fajita steak for a perfect char. Add everything together with fajita seasoning, and top it off with a cheesy quesadilla for a complete meal. Simple, delicious, and perfect for a backyard fiesta!
Prep Time5 minutes
Cook Time20 minutes
Total Time25 minutes
Course: dinner
Cuisine: Mexican
Keyword: fajitas blackstone, steak fajitas blackstone griddle
Servings: 4 people

Equipment

  • 2 Spatulas

Ingredients

  • ½ green bell pepper sliced
  • ½ red bell pepper sliced
  • ½ white onion sliced
  • 2 tablespoon avocado oil for the griddle
  • 1 lb pre-sliced fajita steak store-bought, e.g., from Meijer
  • 1 tablespoon fajita seasoning for extra veggies
  • Salt and pepper to taste
  • 4 flour tortillas
  • 1 cup shredded Chihuahua cheese optional, for quesadillas
  • Lime wedges for serving

Instructions

  • Preheat the Griddle: Set your Blackstone griddle to 375°F and add avocado oil to coat the surface.
  • Cook the Veggies: Add the sliced green bell pepper, red bell pepper, and onion to the griddle. Spread them out and let them cook for about 5 minutes, flipping them with a spatula to ensure even cooking. (The veggies need a head start because the steak cooks quickly.)
  • Prepare for the Steak: Move the veggies to one side of the griddle. Turn up two burners to get them hot (around 470°F if possible).
  • Cook the Steak: Add the pre-sliced fajita steak to the griddle. Spread it out so the steak pieces aren’t touching for a nice sear. Let it cook for about 90 seconds, then flip to get a good sear on both sides. Remember, you don't need to cook the steak for long because the pieces are thin.
  • Combine Veggies and Steak: Once the steak is done, add the peppers and onions back to the griddle. Sprinkle them with a little more fajita seasoning and a splash of water to help everything come together.
  • Sauté Together: Use two spatulas to toss everything around, making sure the steak and veggies are well mixed and sizzling.
  • Make a Quesadilla (Optional): Lower the heat, add a bit more oil to the griddle, and place a tortilla down. Add cheese on top, fold the tortilla, and cook until golden and crispy on both sides.
  • Serve: Slice the quesadilla (if you made one) and serve the fajitas with the grilled veggies. Plate it with lime wedges for extra flavor.