... what would you have done?
I'm really not sure whether I have gone over the top or under it IYSWIM.
I gave a big theatrical gasp, at which ds shouted 'I'M SORRY' and burst into equally theatrical tears, causing dh to run across the room and give him an enormous cuddle ( big soft daddy emoticon). I said calmly that since he'd taken a treat that he knew he shouldn't have, he could only have water this afternoon and nothing to eat until supper time (he is a very active child and normally has tea as in milk and biscuits mid-afternoon). Dh then got him to say sorry properly.
Was that pathetically wimpy, Draconian or about what you would have done?