Now, you can go to the Widgets section after clicking the Appearance tab. Here, you can find two options – Recent Posts Widget (Fluid Image) and Recent Posts Widget (Thumbnail Image). The former one allows you to showcase your latest posts with big fluid images while the latter one allows posts showcase with some small thumbnails. You can choose one according to your website design.
Then, you can drag it to the ideal location within your Widget area. Here, you can decide a lot of settings to better showcase your recent posts, which are more or less the same as the settings for showing recent posts on homepage.