>Kellogg’s “food compound” involved boiling nuts and grinding them into an easily digestible paste for patients at the Battle Creek Sanitarium, a spa for all kinds of ailments.

That sounds similar to boiled peanuts (except without the grinding), a favorite in the U.S. southern region. I've never had them but would like to. According to Wikipedia, there are even some claims that eating boiled peanuts not only circumvents peanut allergies but can actually help reduce them.

I grew up with the Skippy-style peanut butter, but eventually switched to the type which is nothing but peanuts and salt (no sugar, no hydrogenation). Stirring in the oil is not that hard with a reasonably-sized jar.

When I was a teenager (many decades ago) I tried to engineer a cheap, nutritious diet for myself, and a cup of peanuts every day turned out to be a great way to get a lot of protein for not much cost. Still have PB sandwiches several times a week even now.