
Brown the ground beef in a skillet over medium heat, drain the fat, then stir in taco seasoning and water, simmering for 2-3 minutes.
Lay out each tortilla and spread nacho cheese sauce in the center, then add a layer of seasoned beef and shredded cheese.
Place a tostada shell on top of the beef, then spread sour cream on the tostada and layer on lettuce and diced tomato.
Fold the edges of the flour tortilla up and over the center, creating pleated folds all the way around to form a sealed hexagonal shape.
Place each crunch wrap folded-side down in the air fryer basket, lightly spray with cooking oil, and cook at 390°F for 4-5 minutes per side until golden brown and crispy.
Tip: The tostada shell in the middle is what gives this its signature crunch, so don't skip it. Spraying the outside of the tortilla with oil is essential for achieving that deep golden, crackling exterior.
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