I got a few inquires about this Chocolate Chip Cookie blog post that I thought I would just write about it. It could not be easier!
Open up your google+ account and locate the post that you would like to share.
Next let your mouse hover over the down arrow in the upper right hand corner of your post.
Click on it and a drop down menu will appear.
Scroll down to “Embed post” and click that.
It will bring you to this screen:
Thats it! People will then be able to interact with your google plus post directly from your blog!
Wanna see it in action? Just click on the +1 below!
If you want some advanced instruction, I found this post on the Google Developers.