How to make a menu in WP so that there are posts under a category?

Question

User navigation

Good afternoon!
You need a side menu, -> Headings-> list of articles (which are marked with this heading).
In WP, it turns out to do only: side menu -> Headings and the number of articles under this heading, but I would like a list of articles under a certain heading.
Example:
Heading: Salads
and under it articles with their own headings: Olivier, Salad under a fur coat, etc.
Maybe someone will tell you plugins, or I'm just looking in the wrong place, maybe WP has something.
Thanks in advance