Grease 4 ramekins with butter and dust with cocoa powder

Melt chocolate and butter together in microwave

Whisk whole eggs, egg yolks, and sugar until thick

Fold melted chocolate mixture into egg mixture

Sift in flour and gently fold until just combined

Divide mixture between ramekins

Preheat air fryer to 200°C

Air fry for 10-12 minutes until edges are firm but centers jiggle slightly

Let rest 1 minute, run knife around edges, and invert onto plates

Serve immediately with vanilla ice cream