Click the Site Actions menu and the select Site Settings.
Under the Site Collection Administration heading, select Recycle Bin
Note: You must be in the root site of the site collection to see this link. If you are not, first select Go to top level site settings. This will bring you to the site settings page of the root site.
The site collection Recycle Bin has two views. Choose the appropriate view on the left of the screen.
End user Recycle Bin items - displays items deleted by all users of the site.
Deleted from end user Recycle Bin - displays items that have been removed from end user Recycle Bins.
Check the box next to the item(s) to be recovered.
Click Restore Selection to restore the item(s).
Click OK.