adding to table of contents

I have a recipe book in Libre office. I use the TOC. Is there a way to make the TOC add a recipe I just entered? Or do I have to delete the one I have a make a new one?

Also, I can not find in your F1 help for Table of contents.

F1 Help page for Table of Contents is called :

Updating, Editing and Deleting Indexes and Tables of Contents

Try with right click on the index → update index.