Preheat the air fryer to 350 degrees and grease a baking dish well.
In a medium bowl, combine the yogurt, honey, vanilla, and egg yolk until smooth.
Place the bread slices into the greased baking dish. Press down in the center of each piece of bread to form a slight indentation.
In the indentation of each piece of bread, pour the yogurt mixture.
Add strawberries to the top of each slice of bread.
Place the prepared bread slices in the air fryer for 10 minutes (or until the custard is cooked thoroughly), and the bread is toasted to the desired doneness.