Moisture is great but this is way too sweet. Moisture is why I gave it a 1.
This was so good that I made an account just to review it. The texture of the cake is just perfect, and its buttery flavor works so nicely with the caramel-y apple flavor! I reduced the white sugar by about 25% and did not use the icing glaze, and it's still plenty sweet. Definitely saving this recipe to make again. I think I'll use this as a base for all upside-down cakes.