Grease4 ramekins with cooking spray and then dust each with a little flour.
In a microwave-safe bowl, add the chocolate chips and butter and microwave on high heat for about 30 seconds.
Remove the bowl from microwave and stir the mixture well.
Add the eggs, egg yolks and confectioners’ sugar and whisk until well combined.
Add the flour and gently stir to combine.
Place mixture into the prepared ramekins evenly.
Slide the Air Fryer Basket inside and adjust the temperature of Air Fryer to 375 °F to preheat for 5 minutes.
After preheating, arrange the ramekins into the Air Fryer Basket in a single layer.
Slide the basket into Air Fryer and set the time for 10-12 minutes.
After cooking time is finished, remove the ramekins from Air Fryer and place onto a wire rack for about 5 minutes.
Carefully run a knife around the sides of each ramekin several times to loosen the cake.
Invert each cake onto plates and serve with the dusting of powdered sugar.