Kitkats and Jelly Beans are not desserts
I think someone has been misled by the English term 'Sweets' meaning lollies (as we Aussies say).
When I was a kid we had 'Ice Cream Sandwich' lollies where the Ice Cream between the wafers was replaced with marshmallow, so that too can be a lolly.
So I guess 'Liquorice' or 'Lolly'. If it has to be a dessert, I guess 'Lemon Meringue', because that's my favourite :-)