Rich snippet image and recipe.

Hello

I have the easy blog version: 5.0.13.

On google result I can see the stars (rich snippets) for my article (please see attached image).

How can I add image on the rich snippets? Because I have some recipe on my blog.

You can have an example of my recipe here:

http://www.franceszero.com.br/Blog/11-flan-parisiense-flan-parisien.html

Thank you very munch
Best regards
Romaric