IteratingResources.ps1

#Assuming you already have this hashtable
$MyHashes = @(
  @{
    Ensure  = 'Present'
    Name    = 'Putty'
    Version = 'Latest'
    ChocolateyOptions = @{ source = 'https://chocolatey.org/api/v2/' }
  },
  @{
    Ensure  = 'Absent'
    Name    = 'notepadplusplus'
  }
)

Configuration MyDscConfig {
    $Allnodes.nodename {
      #The second Item will error because of missing properties
        foreach($MyHash in $MyHashes) {
            ChocolateyPackage Putty {
                Ensure  = $MyHash['Ensure']
                Name    = $MyHash['Name']
                Version = $MyHash['Version']
                ChocolateyOptions = $MyHash['ChocolateyOptions']
            }
        }
    }
}