01 -
Preheat your Blackstone grill to medium-high heat, around 400°F. Spread vegetable oil evenly across the cooking surface to create a non-stick base.
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 browned and cooked through.
03 -
Push the cooked steak and onion mixture to one side of the grill. Reduce the temperature to medium heat to prepare for assembling quesadillas.
04 -
Place tortillas on the cleared grill area. Layer mozzarella cheese, Monterey Jack cheese, the steak and onion mixture, and more cheese on top.
05 -
Carefully fold each tortilla in half. Cook for 1-2 minutes until the bottom is golden brown.
06 -
Flip each quesadilla and cook for an additional 1-2 minutes until the other side is golden brown. Monitor closely to avoid overcooking.
07 -
Remove quesadillas to a cutting board, slice into wedges, and serve immediately.