Coat 3 individual 12 oz ramekins or heatproof bowl with nonstick spray.
Mix graham cracker crumbs, sugar and melted butter. Divide amongst ramekins, pressing evenly on bottom.
Place cottage cheese, cream cheese and powdered sugar into food processor or blender and until completely smooth (about 1 minute).
Melt white chocolate in microwave for 45 seconds on high power. Continue heating at 30 second intervals, stirring after each interval, until smooth and melted.
Add egg, vanilla and melted white chocolate to cheese and sugar mixture. Process until combined.
Divide filling evenly into ramekins and gently tap on counter several times to release air bubbles.
Preheat air fryer to 300°F. Transfer filled ramekins to basket of air fryer. Air fry for 16-18 minutes. The tops will be golden brown and puffed-up when finished. Allow to cool in basket for a few minutes.
Transfer onto a large plate. Refrigerate at least 2 hours or overnight for best results.