Step 1

Mash bananas in a large mixing bowl, then add egg, brown sugar, olive oil and vanilla extract.  Stir well to combine.

Step 2

Sprinkle flour and cinnamon on top and fold together until just combined.

Step 3

Divide the mixture evenly into muffin cases (silicone or paper) and carefully place into the air fryer basket.

Step 4

Slide the basket into the air fryer and bake on 160C / 320F for 15 minutes or until muffins are golden and a skewer comes out clean.  If you have a smaller air fryer you may need to do two batches.

Step 5

Move to a wire rack and allow the muffins to cool in the cases.