Add the butter and sugars to a bowl and beat until creamy
Add in the egg and vanilla and beat again
Add the plain flour, cornflour, bicarbonate of soda, and salt and beat until a cookie dough is formed!
Add the chocolate chips and beat until they're distributed well!
Portion your cookie dough onto a tray - I use a 5cm scoop and they weight about 50-60g.
Line your air fryer with a piece of parchment paper (I put holes in mine) and add as many cookies will fit. I did three at a time.
Bake the cookies for 10 minutes at 160ºc
Once baked, let the cookies cool for a few minutes before removing the parchment paper with the cookies on as the cookies will still be very soft. Let the cookies cool for 15 minutes before enjoying.
Repeat as many times as you want for as many cookies as you need. See the blog post about storing leftover cookie dough. ENJOY!