01 -
Mix fajita seasonings in a small bowl until combined and set aside.
02 -
Slice steak against the grain into strips approximately 0.5 inches thick. Place into a bowl or resealable gallon-sized bag, add 1 tablespoon olive oil, and toss to coat. Add half of the fajita seasoning and mix to coat the steak evenly.
03 -
Place sliced vegetables into another bowl or resealable gallon-sized bag. Add the remaining olive oil, toss to coat, then add the remaining fajita seasoning. Mix until evenly coated.
04 -
Preheat the Blackstone griddle for about 5 minutes over medium-high heat. Add vegetable oil and spread evenly across the griddle surface.
05 -
Add the steak and vegetables onto the hot, oiled griddle. Cook for 8–10 minutes, tossing together occasionally. Ensure the steak and vegetables are slightly charred and cooked through. Add garlic during the last few minutes of cooking.
06 -
Place tortillas on the griddle during the last minute of cooking to warm them.
07 -
Remove the steak, vegetables, and tortillas from the griddle. Serve with desired toppings such as salsa, sour cream, lettuce, and cheese.