In a microwave safe bowl, add ½ cup semi sweet chocolate chips and 7 Tablespoons unsalted butter. Microwave on high for 30 seconds and stir. Microwave another 30 seconds and stir. If needed, microwave another 15-30 seconds until the mixture is smooth. Set aside to cool slightly.
Preheat air fryer to 370°F.
In a medium bowl add 2 eggs with 3 Tablespoons confectioners' sugar and whisk until pale and frothy. Use a whisk attachment with a mixer, or whisk by hand.
Add melted chocolate mixture to the egg mixture and stir to combine.
Gently fold in 3½ Tablespoons self-rising flour and ¼ teaspoon kosher salt until combined.
Grease ramekins with avocado oil or melted butter and dust with cocoa powder. Be sure to spray or brush oil/butter all over the bottom and sides of ramekins.
Divide batter evenly to fill each 4 ounce ramekin ¾ full, then place the ramekins in the preheated air fryer basket.
Air fry for 8-10 minutes. 8 minutes for traditional lava cake filling, 9 minutes for less chocolate ooze, and 10 minutes for a gooey middle, but even less chocolate ooze.
Let the cakes rest for 2 minutes.
After resting, invert each ramekin onto a plate and lift the ramekin. The cake will gently fall out onto the plate. If cake doesn’t come out on its own, gently tap the ramekin to encourage the cake to drop. Serve with ice cream or whipped cream, and enjoy!