Remember that you can banish any monster for Hootcake's effect, not just a Madolche monster - so you can move non-"Madolche" monsters out of your Graveyard so "Madolche Puddingcess" can activate her effect and gain her ATK boost after summoning her to the field with Hootcake's effect.
Summoning this card using the effect of "Giant Rat" or "Madolche Anjelly" ensures that this card has a target for its effect.
There is an OTK that can be performed with this card, you must have "Madolche Mewfeuille", "T.G. Warwolf" and this card in your hand. and at least 1 Madolche card in your Graveyard: