1. Mix together all the dry ingredients in a bowl.
2. Add the egg, yogurt, orange zest, and your preferred sweetener (vanilla or orange blossom water).
3. Fit in nicely. Now is the time to add garnishes, like nuts.
4. Fill muffin tins with mixture.
5. Put in the 180°C/350ºF air fryer and cook for 5 to 7 minutes. Check frequently.
6. Allow it to come to room temperature.