In a small bowl, whisk together the egg, yogurt, and honey.
Take a piece of bread and press down the middle with a spoon or your fingers to make a well.
Fill the well with your custard mixture and add desired toppings.
Place the toast in your air fryer and bake for 8 minutes at 375F. Check the toast at the end of the 8 minutes. If it hasn't started to brown and caramelize on the edges, put it back in for another minute or two.