01 -
Heat the Blackstone griddle to medium-high, about 400°F. Spread a thin film of oil over the cooking surface.
02 -
Add the steak pieces and diced onion in an even layer. Season with salt, pepper, and onion powder. Cook for 6-8 minutes, turning occasionally, until the steak is browned and the onion is soft.
03 -
Move the steak mixture to one side of the griddle or transfer it to a pan. Lower an open section of the griddle to medium heat.
04 -
Lay the tortillas on the medium-heat section. Sprinkle cheese over one half of each tortilla, add steak and onions, then add more cheese on top.
05 -
Fold each tortilla into a half moon. Cook for about 2 minutes, until the bottom is golden and crisp.
06 -
Flip carefully with a wide spatula and cook 1-2 minutes more, until the second side is crisp and the cheese is fully melted.
07 -
Transfer to a cutting board and rest for 1 minute. Slice into wedges and serve hot with salsa, sour cream, guacamole, or lime.