UPDATE: I updated some of my posts, this post I update Recent Posts Widget for Blogger / Blogspot with Summary And Read More........
STEP #1 Log in to Blogger, go to Layout
Add a Gadget of HTML/JavaScript type.
<div id="24work">
<a href=http://bit.ly/work24><img alt=blogger widgets src=https://sites.google.com/site/bdlab12/24work/blogspot%2btutorial.png/></a>
<script style="text/javascript" src="http://safir85.ucoz.com/bdlab-blogspot/24work/recent-posts/recent_posts_widget_with_snippets.js"></script>
<script style="text/javascript">var numposts = 5;var showpostdate = false;var showpostsummary = true;var numchars = 100;var standardstyling = true;</script>
<script src="http://24work.blogspot.com/feeds/posts/default?orderby=published&alt=json-in-script&callback=showrecentposts"></script>
<div style="font-family: arial, sans-serif; font-size: 9px;" id="rpdr"><a href="http://24work.blogspot.com/2011/12/recrecent-posts-widget-for-blogger.html" title="Grab this Recent Posts Widget" target="_blank">Recent Posts Widget</a> by <a href="http://24work.blogspot.com" title="Recent Posts Widget">Blogger Widgets</a></div><noscript>Your browser does not support JavaScript!</noscript>
<style type=text/css>
#rpdr {background: url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIlPL90UC6AGFnfezFTDd9j0HKO3V19OlWt10qCS1FZiKGR52GfLqzPxfBvS-LxGdzxTpFUGjV-Mo82lOYnnAQOAIs_3Tr6t2hO5KAxWoAu1bEqUKZS5pwCCPCn1xtKC44g9wfjpMaO4ni/s300/blgo.png) 0px 0px no-repeat; padding: 1px 0px 0px 19px; height:14px; margin: 5px 0px 0px 0px;line-height:14px;}
#rpdr, #rpdr a {color:#808080;}
#mtrpwa { border-bottom:1px #cccccc dotted; margin-top:-10px; padding-bottom:10px;}
.mtrpw a {font-weight:bold; }
.mtrpwsumm {}
</style></div>
<a href=http://bit.ly/work24><img alt=blogger widgets src=https://sites.google.com/site/bdlab12/24work/blogspot%2btutorial.png/></a>
<script style="text/javascript" src="http://safir85.ucoz.com/bdlab-blogspot/24work/recent-posts/recent_posts_widget_with_snippets.js"></script>
<script style="text/javascript">var numposts = 5;var showpostdate = false;var showpostsummary = true;var numchars = 100;var standardstyling = true;</script>
<script src="http://24work.blogspot.com/feeds/posts/default?orderby=published&alt=json-in-script&callback=showrecentposts"></script>
<div style="font-family: arial, sans-serif; font-size: 9px;" id="rpdr"><a href="http://24work.blogspot.com/2011/12/recrecent-posts-widget-for-blogger.html" title="Grab this Recent Posts Widget" target="_blank">Recent Posts Widget</a> by <a href="http://24work.blogspot.com" title="Recent Posts Widget">Blogger Widgets</a></div><noscript>Your browser does not support JavaScript!</noscript>
<style type=text/css>
#rpdr {background: url(https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjIlPL90UC6AGFnfezFTDd9j0HKO3V19OlWt10qCS1FZiKGR52GfLqzPxfBvS-LxGdzxTpFUGjV-Mo82lOYnnAQOAIs_3Tr6t2hO5KAxWoAu1bEqUKZS5pwCCPCn1xtKC44g9wfjpMaO4ni/s300/blgo.png) 0px 0px no-repeat; padding: 1px 0px 0px 19px; height:14px; margin: 5px 0px 0px 0px;line-height:14px;}
#rpdr, #rpdr a {color:#808080;}
#mtrpwa { border-bottom:1px #cccccc dotted; margin-top:-10px; padding-bottom:10px;}
.mtrpw a {font-weight:bold; }
.mtrpwsumm {}
</style></div>
And now click Save