Puréed apples is how applesauce is made. It can be created with peeled or unpeeled apples and different spices such as allspice can be used to change the flavor.
Additionally you can add other flavorings or sweeteners such as sugar or honey to make it more sweet.
Applesauce is widely eaten in UK, USA, Canada and Europe.
So can chinchillas eat applesauce?
No, they cannot eat applesauce at all. It is too sweet for them and has too many preservatives which would make it bad for them.
Even if the preservatives and sweeteners were removed chinchillas would still not like this food as they do not like the texture.
Therefore as far as chinchillas are concerned please avoid applesauce.