Add the melted butter to a bowl and add in the sugar and mix
Add the egg and egg yolk and mix again
Add the plain flour
Add the chocolate chips and beat until they're distributed well!
Pour into a lined 7" round tin (See blog post for notes!)
Place the tin inside your air fryer
Air fry the brownies on the air fry function for 14-16+ minutes at 160ºc
Once baked, let the tin cool and then place in the freezer for 2 hours, or the fridge for 3-4 hours, until the brownies have set.
Portion and ENJOY!
