Combine together the olive oil and butter in a wide based frying pan and heat until melted completely. Stir well.
Chop the onion and add this in.
Fry until translucent, usually 2-3 minutes.
Chop or roughly rip the bread and add this in. Stir well and cook for 1-2 minutes.
Chop the sage and add this in. Fry for 1 minute.
Stir well.
Place your mix into a food processor and pulse together until it's a fine consistency.
Roll into balls and then you can place the balls into your air fryer basket. Personally I aim for small balls, as you can see from my pictures. These are ideal servicing sizes for everyone to enjoy a couple alongside their dinner.
Air fry at 200C for 10 minutes. Shake halfway (gently!