01 -
Preheat your Blackstone grill to medium-high heat (approximately 400°F). Spread vegetable oil evenly across the cooking surface.
02 -
Place diced steak and onions on the grill in an even layer. Season with onion powder, salt, and pepper. Sauté for 4-8 minutes per side until steak is browned and cooked through.
03 -
Push the cooked steak and onions to one side of the grill. Reduce the Blackstone temperature to medium heat.
04 -
Place tortillas on the cleared area of the grill. Top each tortilla with a layer of both cheeses, then add the steak and onion mixture, and finish with more cheese on top.
05 -
Carefully fold each tortilla in half to create a half-moon shape. Cook for 1-2 minutes until the bottom is golden brown.
06 -
Carefully flip each quesadilla and cook for another 1-2 minutes until the other side is golden brown. Watch closely as they brown quickly.
07 -
Remove quesadillas to a cutting board and slice into wedges. Serve immediately while hot and crispy.