Add the eggs and powdered sugar to a bowl. Whisk well for 1 to 2 minutes.
Add the oil, milk, and vanilla essence. Mix until combined.
In another bowl, mix the flour, baking powder, baking soda, and salt. Sift the dry mixture.
Add the dry mixture to the wet mixture a little at a time. Gently mix until you have a thick, smooth batter. Do not overmix.
Toss the tutti frutti with 1 teaspoon flour. Gently fold it into the batter.
Place cupcake liners in the moulds and fill them about ¾ full.
Preheat the air fryer to 130°C (266°F) for 3 minutes.
Air fry the cupcakes at 130°C (266°F) for 15 minutes.
Insert a toothpick into the center. If it comes out clean, the cupcakes are ready. If there is wet batter, cook for another 1 to 2 minutes and check again.
Cool the cupcakes in the mould for 5 minutes, then remove and cool fully.