
Mix graham cracker crumbs, melted butter, and sugar. Press firmly into the bottom of a 6-inch springform pan or ramekins.
Beat cream cheese and sugar until smooth. Add egg, vanilla, flour, and sour cream, mixing until just combined — do not overbeat.
Pour filling over the crust and smooth the top.
Air fry at 310°F for 20–25 minutes until the edges are set but the center still has a slight jiggle.
Turn off the air fryer and let the cheesecake cool inside for 10 minutes, then refrigerate for at least 2 hours before serving.
Tip: The low temperature is key to preventing cracks. Let all your dairy ingredients come to room temperature before mixing for the smoothest texture.
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