Preheat airfryer to 180C/350F

Mix butter, sugar and crushed dried chillies.

Beat the eggs and mix them in. Add the melted chocolate and vanilla extract.

Slowly add in the flour and cocoa powder. Mix gently, do not over stir.

Using a greased, or baking paper lined tin/container, pour the mixture in.

Cook in the air fryer for 15 to 20 minutes, checking a few times to make sure the top isn't burning - if it is cooking quickly, put some foil or baking paper on top.

Once ready, allow to cool and then cut into smaller portions to serve.