Prepare the Mixture: In a mixing bowl, combine the ground meat, breadcrumbs, onion, carrot, parsley, garlic, egg, Worcestershire sauce, salt, pepper, and paprika. Mix until just combined.
Form the Muffins: Lightly grease a muffin tin. Scoop the mixture into the tin, filling each cup about 3/4 full.
Air Fry: Preheat your air fryer to 350°F (175°C). Place the muffin tin in the air fryer basket. Cook for 15-20 minutes, or until the meatloaf muffins are cooked through and the internal temperature reaches 160°F (70°C).
Add Ketchup: In the last 5 minutes of cooking, top each muffin with a spoonful of ketchup for added flavor.
Serve: Remove the muffins from the air fryer and let them cool slightly before serving.