Pat the 1 ½ lb sirloin steak cut into 1-inch cubes, excess fat trimmed cubes completely dry with Paper Towel — this is key to getting a good sear in the Air Fryer. In a large Mixing Bowl, combine the 2 tbsp olive oil, 1 tsp garlic powder, 1 tsp onion powder, 1 tsp smoked paprika, ¾ tsp kosher salt, and ½ tsp black pepper freshly ground. Add the 1 ½ lb sirloin steak cut into 1-inch cubes, excess fat trimmed cubes and toss until every piece is evenly coated.

Preheat your Air Fryer to 400°F for 3 minutes. Arrange the 1 ½ lb sirloin steak cut into 1-inch cubes, excess fat trimmed bites in a single layer in the Air Fryer basket — do not overcrowd. Work in batches if needed. Air fry for 7–9 minutes, shaking the basket halfway through, until the bites are browned on the outside and cooked to your preferred doneness (7 min = medium-rare, 9 min = medium-well).

While the 1 ½ lb sirloin steak cut into 1-inch cubes, excess fat trimmed bites cook, melt the 3 tbsp unsalted butter in a small Saucepan over medium-low heat. Add the minced 1 tsp garlic powder and cook, stirring frequently, for 1–2 minutes until fragrant but not browned. Remove from heat and stir in the 1 tsp Worcestershire sauce (if using) and 2 tbsp fresh parsley finely chopped.

Transfer the hot 1 ½ lb sirloin steak cut into 1-inch cubes, excess fat trimmed bites to a serving Mixing Bowl or platter. Immediately drizzle the 1 tsp garlic powder herb 3 tbsp unsalted butter over the top and toss gently to coat. Taste and adjust ¾ tsp kosher salt if needed. Serve right away — these are best enjoyed fresh and hot.