PseudoSplattingDsc.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'
  }
)
. .\Get-DscSplattedResource.ps1

Configuration MyDscConfig {
    $Allnodes.nodename {
      #The second Item will now work
        foreach($MyHash in $MyHashes) {
            # 'x' is an alias for my Get-DscSplattedResource function
            x ChocolateyPackage $MyHash['name'] $MyHash
        }
    }
}