Hey Lise. You can read my post here for a longer description of group by.
But basically, I think your codeblock should work with a minor change.
You’ve grouped the recipes properly, but now you need to ask for them to be displayed. You do this with the rows property, which I discuss more in that post.
But I think this should work:
list rows.file.link
from "Recipes"
where file.name != "_Recipes TOC"
group by file.path