Prep the filling: In a bowl, mix shredded beef with chili powder, cumin, garlic powder, smoked paprika, salt, and pepper.
Stir in onion, cilantro, and cheese. Taste and adjust seasoning. The mixture should be flavorful and a bit moist, not watery.
Warm the tortillas: To prevent cracking, wrap tortillas in a damp paper towel and microwave for 30–45 seconds, or lightly heat them on a skillet.
Keep them warm and covered while you work.
Fill and roll: Place 2–3 tablespoons of beef mixture along one edge of a tortilla. Roll tightly into a thin, cigar-like shape. Place seam-side down.
Repeat with remaining tortillas.
Oil lightly: Mist the rolled taquitos with oil spray on all sides, or brush with a thin coat. This helps them crisp and color evenly.
Preheat the air fryer: Set to 400°F (200°C) for 3 minutes. A hot basket encourages a crisp shell.
Arrange in the basket: Place taquitos seam-side down in a single layer, leaving a little space between them.
Work in batches if needed to avoid overcrowding.
Air fry: Cook for 7–9 minutes, flipping halfway. They’re done when the edges are deeply golden and the shells are firm and crisp.
Serve: Let cool 2 minutes (they’re hot!). Add toppings like salsa, guac, crema, and a squeeze of lime.
Serve with shredded lettuce for crunch.