This extension will detect recipes on any page you visit and will highlight them at the top of the page. Easy!
No more hunting for the actual recipe when you visit a long-winded food blog!
You can turn it off for specific sites if you find it's not needed and edit the blacklist under "Options" when you right-click the green Recipe Filter icon in your toolbar.
This is an open source project: https://github.com/sean-public/RecipeFilter