- Login to your Blogger Account and go to Design > Edit HTML and click on the check box which says “Expand Widget Templates”
- Press F3 on your keyboard and find for <data:post.body/>
- copy this code
and paste in front of <data:post.body/> see images below.
Lastly, save your edit and you will see like button in every posting inside your blog.
p/s: If you like this, just shre it to your friend.