Some meals just feel like a ritual, and for me, steak fajitas on the Blackstone are one of them. Firing up the griddle, slicing peppers and onions, and hearing that first sizzle as the steak hits the hot surface never gets old.
These Blackstone steak fajitas are quick, unfussy, and deeply comforting. Tender strips of steak cook alongside sweet bell peppers and onions, picking up a light char and bold flavor as they sear.
Toward the end, the tortillas warm right on the griddle, becoming soft and perfectly pliable. Everything comes together in about 20 minutes, but it’s the kind of meal you want to linger over.
We’ve been making these fajitas on repeat lately. They’re easy enough for a weeknight, festive enough for guests, and always disappear fast once they hit the table.
For the Steak Fajitas
- Steak – Flank steak works especially well here because it stays tender when sliced against the grain, but you can use your favorite cut if you prefer.
- Olive Oil – This helps the seasoning stick to both the steak and vegetables and keeps everything from drying out as it cooks.
- Bell Peppers – A mix of red and yellow peppers adds sweetness, color, and balance to the savory steak.
- Red Onion – Softens as it cooks and brings a mild sweetness that pairs perfectly with the peppers.
- Garlic – Added toward the end of cooking so it becomes fragrant without burning, giving the fajitas a big boost of flavor.
- Vegetable Oil – Used on the hot griddle to prevent sticking and create a nice sear on the steak and vegetables.
- Tortillas – Flour or corn both work well; warming them on the griddle makes them soft and ready to fill.
For the Fajita Seasoning
- Chili Powder – Adds warmth and classic fajita flavor without overpowering heat.
- Cumin – Brings an earthy, slightly smoky depth that makes the seasoning taste authentic.
- Smoked Paprika – Enhances the charred flavor from the griddle with a subtle smokiness.
- Kosher Salt – Balances all the flavors and helps season the steak and vegetables evenly.
- Black Pepper – Adds a mild bite and rounds out the spice blend.
Quick Juicy Blackstone Steak Fajitas
Notes
Ingredients
- 1 ½ pounds flank steak or steak of your choice, sliced into ½-inch strips
- 2 Tablespoons olive oil, divided
- 1 red bell pepper, sliced
- 1 yellow bell pepper, sliced
- 1 red onion, sliced
- 3 cloves garlic, minced
- 2 Tablespoons vegetable oil, for the griddle
- Tortillas (flour or corn), for serving
Fajita Seasoning
- 1 teaspoon chili powder
- 1 teaspoon cumin
- ½ teaspoon smoked paprika
- ½ teaspoon kosher salt
- ¼ teaspoon ground black pepper
Instructions
- In a small bowl, stir together all of the fajita seasoning ingredients until evenly combined. Set aside.
- Cut the steak against the grain into slices about ½ inch thick. Transfer to a bowl or gallon-size resealable bag. Add 1 Tablespoon of olive oil and toss until coated. Sprinkle in half of the fajita seasoning and mix well so the steak is evenly seasoned.
- Place the sliced peppers and onion into a separate bowl or resealable bag. Add the remaining olive oil and toss to coat. Add the rest of the fajita seasoning and mix until the vegetables are well covered.
- Heat the Blackstone griddle over medium-high heat for about 5 minutes. Once hot, add the vegetable oil and spread it evenly across the surface.
- Add the steak and vegetables to the oiled griddle. Cook for 8–10 minutes, stirring occasionally, until the meat is cooked through and the vegetables are tender with a light char. Add the minced garlic during the final few minutes of cooking.
- During the last minute, place the tortillas on the griddle and warm them briefly.
- Remove the steak, vegetables, and tortillas from the griddle and serve immediately with your favorite toppings.
1. What’s the best cut of steak to use for fajitas?
Flank steak is a classic choice and works beautifully here, but it’s not your only option. Skirt steak, sirloin, or any quick-cooking steak you love will do the job. The real secret? Slice it against the grain. That’s what keeps the steak tender, not chewy.
2. Can I prep this ahead of time?
Yes! If you’re feeling organised, you can toss the steak and veggies with the oil and seasoning ahead of time and pop them in the fridge. Even 30 minutes helps, but overnight is totally fine too. More time = more flavour.
3. How hot should the griddle be?
Hot. Properly hot. You want that satisfying sizzle the moment the steak hits the griddle. If the surface isn’t hot enough, the steak and veggies will release moisture and steam instead of searing—and we want char, not soggy fajitas.
4. When do I add the garlic so it doesn’t burn?
Right at the end. Garlic cooks fast, and on a hot griddle it can go from fragrant to bitter in seconds. Stir it in during the final few minutes so it softens and perfumes everything without burning.
5. Don’t have a Blackstone? Can I still make this?
Absolutely. A large cast-iron skillet on the stovetop works just fine. Cook the steak first, set it aside, then cook the veggies. Toss everything back together at the end with the garlic and you’re good to go.
