Instructions: Get your air fryer ready by heating it up to 350F 175C. You can melt the dark chocolate and milk together in 30 second intervals in a bowl that can go in the microwave. Stir the mixture until it is smooth. Allow it to cool a bit. In a different bowl, mix the egg yolks, sugar, and vanilla extract with a whisk until everything is well blended. Slowly add the melted chocolate mixture to the egg yolk mixture while whisking all the time. Put the egg whites and a pinch of salt in a different clean bowl. Use an electric mixer to beat them until stiff peaks form. Mix the egg whites into the chocolate mixture slowly until they are fully combined. Coat four ramekins with cooking spray and sprinkle them with powdered sugar. Put some chocolate goodness into each ramekin. Once the air fryer basket is hot, put the souffles in the ramekins that have been filled. Cook for 10 to 12 minutes, or until the souffles have risen and are set in the middle. Carefully take the souffles out of the air fryer. If you want, sprinkle them with more powdered sugar and serve them right away. They need to be light, fluffy, and soft in the middle. Have fun with your tasty Air Fryer Chocolate Souffles!