• Preheat the air fryer to 400°F for 5 minutes.

Cook the Kielbasa:

• Add the sliced kielbasa to the air fryer basket
  14 ounces kielbasa
• Drizzle with avocado oil and shake the basket to evenly coat.
  1 Tablespoon avocado oil
• Spread the kielbasa in a single layer and cook for 5 minutes.

Glaze and Caramelize:

• Brush the barbecue sauce onto the kielbasa using a pastry brush.
  2 Tablespoons barbecue sauce
• Shake the basket to evenly coat both sides.
• Sprinkle the brown sugar over the top.
  2 Tablespoons light brown sugar
• Cook for an additional 5 minutes until caramelized
• Sprinkle with red pepper flakes before serving.
  1 teaspoon red pepper flakes

Make the Mustard Sauce:

• In a bowl, mix together mayonnaise, Dijon mustard, parsley, paprika, salt, and black pepper until smooth.
  ¼ cup mayonnaise, 3 Tablespoons grainy Dijon mustard, 1 Tablespoon chopped parsley, 1 teaspoon paprika, pinch coarse kosher salt, pinch black pepper
• Serve the crispy kielbasa hot with the creamy mustard sauce on the side for dipping.