Student essays + recipe advice?

My job now is to give detailed writing feedback on 50 student papers on coronavirus modelling, using the classic SIR model. On the bright side, the students are much more aware than they usually are that a model =/= reality, compared to last year when the topic was Lotka-Volterra population dynamics. I guess this is because of media attention on disagreement between epidemiologists? On the not-so-bright side, they can't write any better than usual. Augh. /o\

Relatedly, I feel the need to bake chocolate chip cookies, preferably ones that are very chocolatey (like, cocoa in the batter as well). Does anyone have a favorite recipe, and how do I get them to be more chewy as opposed to brittle?

Recent reading

In Other Lands by Sarah Rees Brennan (2017)
For my fannish book club, obviously, why else would I be reading things that are unrelated to Flight of the Heron? This was page-turney YA fantasy, but the narrative voice grated on me after a while. It is also extremely slow-burn--it was obvious to me from the start who the main character would end up with, but he spends much of the book being mean to him, so I started feeling like maybe the love interest guy could do better...

Clanship, Commerce and the House of Stuart, 1603-1788 by Allan I. Macinnes (1996)
Ha ha, back to form. My research reading is getting ridiculous. *facepalm* This was a very good complement to other books I've been reading, though--it's about social and economic issues. I guess you could say that it's about the transition between two social systems, neither of which I would like to live in? The main thesis is that the clan elite abandoned their old social obligations to their clans as they were integrated more and more into the other British upper classes and into the proto-capitalist and colonial economy, with consequences like rent-raising and, later, the clearances.

( More detailed notes for the approximately three people in my circle who will care. )