Preheat the air fryer to 350°F for 5 minutes.

In a medium bowl, whisk together the flour, granulated sugar, baking powder, and salt until evenly combined.

In a separate bowl, whisk the eggs, then add the milk, vanilla bean paste, and melted butter and whisk until smooth.

Pour the wet mixture into the dry mixture in 2 to 3 additions, whisking just until the batter is smooth and pourable with no dry streaks.

Lightly coat the air fryer basket with non-stick cooking spray.

Using a small cookie scoop or tablespoon, drop small mounds of batter into the basket, leaving a little space between each bite and working in a single layer.

Air fry at 350°F for 5 to 7 minutes, or until the funnel cake bites are puffed and light golden on the edges.

Transfer cooked bites to a wire rack or a plate lined with paper towels and repeat with the remaining batter, lightly spraying the basket between batches if needed.

While the funnel cake bites are still warm, dust them generously with powdered sugar and serve immediately.