The Natured theme includes a recent posts widget to display the most recent posts with thumbnails. The thumbnails are automatically generated from the featured image you upload for the post(s).
- Go to Appearance > Widgets
- Drag the Recent Posts with Thumbnails widget into the sidebar position you want to show it in.
- Title your widget
- Choose how many posts to display
- Choose the order of displaying posts
- Select the category from where to get posts from
- Check the box next to Display Post Date (optional)
- Click the Save button