In one of my previous publications, I have offered the opportunity to embed the Blogger pluging to post 10 recent posts summaries on a sidebr of your Blogger Blog. The problem is - the script did not work on Blogger. With my weak programming knowledge, the best thing I could do was to find a valid substitute solution. Here you can access the site, offering to generate such a plugin.
The Recent Posts Widget displays recent posts summaries in your sidebar. You can customize this widget to display the recent posts of any blogger blog that you like, you can customize the number of posts to display, whether or not to display a post summary and the size of this summary (in number of characters). Just Fill Out the Details in the Widget installer, and it will be automatically transferred to your Blogger Blog layout for update.
This time, I personally tested it, and confirmed that the plugin code works fine.