Brush the basket of your air fryer with melted butter or spray with ghee oil spray.
Cut each bread slice into thirds so you have 24 sticks.
In a shallow dish like a pie plate, whisk together the eggs, milk, powder sugar, vanilla, cinnamon.
Quickly dip the bread slices into the egg mixture, making sure not to let them soak too long. Dip only as many pieces as will fit into your air fryer basket. Arrange the sticks in a single layer making sure the sticks aren’t touching.
Turn the air fryer on to 375 degrees F and cook for about 10 minutes, flipping the sticks halfway through. For the remaining batches, cook the sticks for 6-7 minutes since the air fryer is already hot.
Serve warm with powdered sugar and syrup or your other favorite toppings.
Notes
You can use regular sliced bread to make these french toast sticks. Just starting checking them around 7 or 8 minutes in (first batch) since they won't take as long to cook. Start checking after 4 minutes for subsequent batches.