dimonuch

It displays the date in the format of the last “N” posts with a given PostType (date format, number of posts and other set in the widget settings).

PostType-Widget

It displays the date in the format of the last "N" posts with a given PostType (options set in the widget settings)

webdeveric

This plugin provides a dashboard widget that lists recently edited content for quick access.
Options (per user settings):
<ul>
<li>Number of items to show</li>
<li>Excerpt length – number of words (0 = hide)</li>
<li>Show only your edits</li>
<li>What post types to show</li>
<li>What post statuses to show</li>
</ul>

Recently Edited Content Widget

This plugin provides a dashboard widget that lists recently edited content for quick access.

PostType-Widget vs Recently Edited Content Widget