Use this code to display all post titles in your blogspot.com. You can place this code using widget in sidebar.

Replace YOUR___BLOG with your own blog url.

<script language="JavaScript" src="http://feed2js.org//feed2js.php?src=http%3A%2F%2FYOUR___BLOG.blogspot.com%2Ffeeds%2Fposts%2Ffull+&utf=y" charset="UTF-8" type="text/javascript"></script>

<noscript>
<a href="http://feed2js.org//feed2js.php?src=http%3A%2F%2FYOUR___BLOG.blogspot.com%2Ffeeds%2Fposts%2Ffull+&utf=y&html=y">View RSS feed</a>
</noscript>