01 - 
                Preheat the air fryer to 200°C. Cook frozen shoestring fries according to package instructions until golden and crispy. Set aside.
              
              
              
                02 - 
                Heat a large skillet over medium-high heat. Add neutral oil, then ground beef and diced onion. Sauté and break meat apart until fully browned and onions are soft, about 6–8 minutes.
              
              
              
                03 - 
                Stir in minced garlic and cook briefly for 30–45 seconds until fragrant, avoiding browning.
              
              
              
                04 - 
                Add onion powder, garlic powder, salt, and black pepper to the skillet. Stir to distribute seasonings evenly. Drain excess fat thoroughly.
              
              
              
                05 - 
                Add canned cheddar cheese soup and cream of mushroom soup to the meat mixture. Stir well until cohesive and creamy.
              
              
              
                06 - 
                Lightly grease a 28x18 cm baking dish with oil. Spread the creamy meat mixture evenly along the bottom.
              
              
              
                07 - 
                Arrange crispy cooked french fries over the meat base, then sprinkle shredded sharp cheddar evenly across the top.
              
              
              
                08 - 
                Preheat oven to 175°C. Bake for 10–15 minutes until cheese is fully melted and fries are just browned. Monitor closely to avoid burning the cheese or fries.
              
              
              
                09 - 
                While the casserole bakes, combine mayonnaise, ketchup, mustard, pickle juice, dehydrated onions, and a pinch of black pepper in a bowl. Whisk until smooth and creamy.
              
              
              
                10 - 
                Let the casserole rest for 5 minutes after baking. Drizzle prepared burger sauce over the hot surface just before serving.