Preheat and prep: Preheat your air fryer to 320°F (160°C) for about 3–4 minutes.
Lightly butter four 6-ounce ramekins so the pudding releases easily.
Warm the dairy: In a small saucepan or microwave-safe bowl, gently warm the milk and cream until just lukewarm. This helps the sugar dissolve and prevents shocking the egg.
Whisk the custard base: In a mixing bowl, whisk the egg, sugar, vanilla, cinnamon, and salt until smooth. Slowly stream in the warm milk-cream mixture while whisking to combine.
Add rice and raisins: Stir in the cooked rice and raisins, breaking up any clumps so everything is evenly dispersed.
Divide into ramekins: Spoon the mixture evenly into the buttered ramekins.
Tap each ramekin gently on the counter to settle the rice and release any air bubbles.
Arrange in the air fryer: Place the ramekins in the air fryer basket, leaving space between them for airflow. If your basket is small, cook in batches.
Air fry until set: Cook at 320°F (160°C) for 16–22 minutes, checking at the 15-minute mark. The pudding is done when the edges are set and the center has a slight jiggle. Do not overcook—carryover heat will finish the job.
Rest and cool: Let the ramekins sit in the turned-off air fryer with the basket pulled out for 5 minutes, then transfer to a rack and cool for another 10–15 minutes.
Serve: Enjoy warm with a sprinkle of cinnamon.
For extra indulgence, add a spoonful of whipped cream or a drizzle of honey.