How to enable the Disk Cleanup utility with Windows Server 2012 R2

The Disk Cleanup utility is not available by default with Windows Server 2012 R2.  To enable it, the Desktop Experience component must be installed either via the Server Manager or PowerShell.  The PowerShell command to use would be:

Install-WindowsFeature Desktop-Experience

A reboot is required before the Disk Cleanup utility is functional.