Making an healthy yet delicious cake - and an healthy dish in general - is sometimes easier than one could think.
No need to find particular or exotic products, or to use substitutes for regular (and unhealthy maybe) ingredients, or to search for innovative recipes developed and tested by gurus of healthy eating.
All you need are few staple, cheap ingredients available even in the pantry of cooking-hating people and - here is the real surprise - an old, often forgotten and underrated recipe, developed when people had access to a much more limited number of food items than nowadays, and some products that we can have everyday (and often try to limit for healthy reasons, like meat or cheese) could be eaten just once in a while or reserved only for special occasions (think chocolate or coffee).
Due to the scarcity of available ingredients, or to their high price, people were forced to be creative and inventive in order to develop"smart" recipes able to transform few basics products into tasty and satisfying dishes, some of which imitating or trying to reproduce richer and expensive ones.