Blogger Meta Tag

Log in to your blogger account
Go to edit html
Make sure to backup your templates
Find this code

<title><data:blog.pagetitle/></title>

Then Change that code above to this code:

<b:if cond='data:blog.pageType == "item"'>
<title><data:blog.pageName/> | <data:blog.title/></title>
<b:else/><title><data:blog.pageTitle/></title>
</b:if>

Then Save.