Simple answer, no. Feeding your cat peanut butter is not a good idea. Peanut butter mainly contains proteins and carbohydrates along with a high level of fat that could negatively affect your cat.
Another risk factor for cats is the fact that they are “obligate carnivores” by nature and rely on animal products to give them the required nutrients,that is why meat is generally considered to be something that cats would consume more.
This also means that cats will have trouble digesting plant or any other sort of vegetarian matter as compared to when the food is meaty. Basically, your cat won’t receive the amino acids and such as needed for their bodies if they went purely green and decided to sustain themselves on vegetables.
Now, peanut butter is not an animal product, hence your cat will have a tougher time digesting it.
Although it might be possible to perhaps