When you cook the cupcakes you will probably only be able to fit up to 6 in at once (depending on the size of your Airfryer). We did our chocolate cupcakes in 2 rounds of 4.
As you need time for your chocolate cupcakes to cool down before you can add the frosting, I would recommend that you make the frosting while your cupcakes are cooking as it gives you a head start. I had a little extra cake batter leftover, which I placed on top as you just can’t waste cake batter can you?
You can of course make it more chocolately. Some chocolate flavoured soft cheese is amazing as is adding some chocolate sauce.