01 -
Dice red potatoes and toss with 1 tablespoon olive oil, salt, and black pepper. Preheat air fryer to 400°F. Cook potatoes for 16 to 18 minutes until golden and crisp, shaking basket halfway through.
02 -
Heat 1 tablespoon olive oil in a skillet over medium heat. Add diced onions and cook for 10 to 15 minutes until deeply golden and caramelized, stirring occasionally.
03 -
Increase skillet to high heat, add ground beef, and flatten using a spatula. Cook for 5 to 7 minutes, breaking up occasionally, until well browned and fully cooked. Season with salt and black pepper.
04 -
In a mixing bowl, whisk together mayonnaise, ketchup, Dijon mustard, and Cajun seasoning until smooth. Adjust seasoning as desired.
05 -
Divide crispy potatoes among serving bowls. Top with browned beef, caramelized onions, and shredded cheese. Drizzle with prepared sauce and finish with pickles and lettuce if desired.